Answer: The Prophet (may Allah's peace and blessings be upon him) said: "The example of the one who remembers his Lord and the one who does not remember Him is like the example of a living and a dead person." [Narrated by Al-Bukhāri]
This is because the value and worth of man's life depend on how frequently he remembers Allah Almighty.

Answer: 1. It pleases the Most Compassionate
2. It expels the devil
3. It protects the Muslim against evil
4. It brings about recompense and reward

Answer: The best Dhikr is: "La ilāha illallāh" (there is no god but Allah). [Narrated by At-Tirmidhi and Ibn Mājah]

Answer: "Alhamdulillāhi alladhī ahyāna ba‘damā amātanā wa ilayhi an-nushūr" (Praise be to Allah Who gave us life after He caused us to die and to Him is the resurrection). [Agreed upon]

Answer: "Alhamdulillāhi alladhī kasānī hadha ath-thawba wa razaqanīhi min ghayri hawlin minnī wa la quwwah" (Praise be to Allah Who clothed me in this garment and gave it to me without any power or strength on my side). [Narrated by Abu Dāwūd, At-Tirmidhi, and others]

Answer: "Bismillāh" (In the name of Allah). [Narrated by At-Tirmidhi]

Answer: "Allāhumma lakal hamdu anta kasawtanīhi as’aluka khayrahu wa khayra ma suni‘a lahu wa a‘ūdhu bika min sharrihi wa sharri ma suni‘a lah" (O Allah, praise be to You, You clothed me therewith. I ask You for its good and the good of that for which it was made, and I seek refuge with You from its evil and the evil of that for which it was made). [Narrated by Abu Dāwūd and At-Tirmidhi]

Answer: When seeing someone wearing a new garment, one should supplicate for him and say: "Tublī wa yukhlifullāhu ta‘āla" (May you wear it out and may Allah Almighty grant you another instead). [Narrated by Abu Dāwūd]

Answer: "Allāhumma innī a‘ūdhu bika min al-khubuthi wal khabā’ith" (O Allah, I seek refuge with You from the male and female devils). [Agreed upon]

Answer: "Ghufrānak" (I seek Your forgiveness). [Narrated by Abu Dāwūd and At-Tirmidhi]

Answer: "Bismillāh" (In the name of Allah). [Narrated by Abu Dāwūd and others]

Answer: "Ash-hadu allā ilāha illallāh wahdahu la sharīka lah wa ash-hadu anna Muahmmadan ‘abduhu wa rasūluh" (I testify that there is no god but Allah alone with no partner, and I testify that Muhammad is His slave and messenger). [Narrated by Muslim]

Answer: "Bismillāhi tawakkaltu ‘alallāh wala hawala wala quwwata illā billāh" (In the name of Allah, I rely upon Allah, and there is no might nor strength except with Allah). [Narrated by Abu Dāwūd and At-Tirmidhi]

Answer: "Bismillāhi walajnā wa bismillāhi kharajnā wa ‘alallāhi rabbinā tawakkalnā" (In the name of Allah we enter, and in the name of Allah we leave, and on Allah, our Lord, we rely) then one should greet his family. [Narrated by Abu Dāwūd]

Answer: "Allāhumma iftah lī abwāba rahmatik" (O Allah, open for me the doors of Your mercy). [Narrated by Muslim]

Answer: "Allāhumma innī as’aluka min fadlik" (O Allah, I ask You for Your favor). [Narrated by Muslim]

Answer: One should repeat what the muezzin says except when saying: "Hayy ‘ala as-salāh" (come to prayer) and "Hayy ‘ala al-falāh" (come to success). Here, one should say: "La hawla wala quwwata illā billāh" (there is no might nor strength except with Allah). [Agreed upon]

Answer: Invoke blessings upon the Prophet (may Allah's peace and blessings be upon him. [Narrated by Muslim] Then, one should say: "Allāhumma rabba hādhihi ad-da‘watit tāmmah wasalātil qā’imah āti Muhammadan al-wasīlata wal fadīlah wab‘athuhu maqāman mahmūdan illadhī wa‘adtah" (O Allah, Lord of this perfect call and the prayer that is about to be established, grant Muhammad the right of intercession and favor and resurrect him to a praised position that You have promised him). [Narrated by Al-Bukhāri]
One should also supplicate to Allah between the Adhān and Iqāmah (the second call to prayer), as it is a time when the supplication is not rejected.

Answer: 1. Reciting Āyat al-Kursi, which reads: {Allah: none has the right to be worshiped except Him, the Ever-Living, All-Sustaining. Neither drowsiness overtakes Him nor sleep. To Him belongs all that is in the heavens and all that is on earth. Who is there that can intercede with Him except with His permission? He knows what was before them and what will be after them, while they encompass nothing of His knowledge, except what He wills. His Kursī [footstool] extends over the heavens and earth, and safeguarding of both does not weary Him, for He is the Most High, the Most Great.} [Surat al-Baqarah: 255] 2. Reciting: In the name of Allah, the Most Compassionate, the Most Merciful {Say: “He is Allah, the One; Allah, the Eternal Refuge. He neither begets nor is He begotten, and there is none comparable to Him.”} [Surat al-Ikhlās: 1-4] Three times In the name of Allah, the Most Compassionate, the Most Merciful {Say, “I seek refuge with the Lord of the daybreak, from the harm of all what He has created; from the harm of night’s darkness when it spreads around, from the harm of the sorceresses who blow on knots, and from the harm of the envier when he envies.} [Surat al-Falaq: 1-5] - three times In the name of Allah, the Most Compassionate, the Most Merciful {Say, “I seek refuge with the Lord of mankind, the Sovereign of mankind, the God of mankind, from the harm of the lurking whisperer, who whispers into the hearts of mankind, from among jinn and mankind.”} [Surat an-Nās: 1-6] - three times 3. "Allāhumma anta rabbī lā ilāha illa anta khalaqtanī wa ana ‘abduka wa ana ‘ala ‘ahdika wa wa‘dika mastata‘t, a‘ūdhu bika min sharri ma sana‘t, abū’u laka bini‘matika ‘alayy wa abū’u bidhambī faghfir lī fa innahu lā yaghfiru adh-dhunūba illa anta" (O Allah, You are my Lord. There is no god except You. You have created me, and I am Your slave, and I hold to Your covenant as far as I can. I seek refuge in You from the evil of what I have done. I acknowledge the favors that You have bestowed upon me, and I confess my sins. So, forgive me, for none can forgive sins except You). [Narrated by Al-Bukhāri]

Answer: "Bismika allāhumma amūtu wa ahyā" (In Your name, O Allah, I die and I live). [Agreed upon]

Answer: "Bismillāh" (In the name of Allah).
If one forgets to say it before eating, he should say:
"Bismillāhi fī awwalihi wa ākhirih" (In the name of Allah at its beginning and at its end). [Narrated by Abu Dāwūd and At-Tirmidhi]

Answer: "Alhamdullillāhi al-ladhī at‘amanī hādha wa razaqanīh min ghayri hawlin minnī wala quwwah" (Praise be to Allah Who fed me and provided me with this food without any power or strength on my side). [Narrated by Abu Dāwūd, Ibn Mājah, and others]

Answer: "Allāhumma bārik lahum fīmā razaqtahum waghfir lahum warhamuhum" (O Allah, bless them in what You have provided them with, and forgive them and have mercy on them). [Narrated by Muslim]

Answer: "Alhamdulillāh" (praise be to Allah).
His brother or his companion should say to him: "Yarhamukallāh" (may Allah have mercy on you).
The sneezer should, then, reply saying: "Yahdīkumullāh wa yuslih bālakum" (may Allah guide you and improve your condition). [Narrated by Al-Bukhāri]

Answer: "Subhānak allāhumma wa bihamdik, ash-hadu allā ilāha illā ant, astaghfiruka wa atūbu ilayk" (Glory and praise be to You, O Allah. I testify that there is no god but You. I seek Your forgiveness and I repent to You). [Narrated by Abu Dāwūd, At-Tirmidhi, and others]

Answer: "Bismillāh walhamdulillāh" (In the name of Allah and praise be to Allah), "Subhāna al-ladhī sakhkhara lanā hādha wa mā kunnā lahu muqrinīn wa innā ilā rabbinā lamunqalibūn" (Glory be to Him Who has subjected this for us, for we could not have done it by ourselves. It is to our Lord that we will surely return), "Alhamdulillāh, alhamdulillāh, alhamdulillāh, allāhu akbar, allāhu akbar, allāhu akbar, subhānaka allāhumma innī zhalamtu nafsī faghfir lī fa’innahu lā yaghfiru adh-dhunūba illā ant" (Praise be to Allah - three times - Allah is the Most Great - three times - Glory be to You, O Allah, I wronged myself, so forgive me, for none can forgive sins but You). [Narrated by Abu Dāwūd and At-Tirmidhi]

Answer: "Allāhu akbar, allāhu akbar, allāhu akbar" (Allah is the Most Great - three times), "Subhāna al-ladhī sakhkhara lanā hādha wa mā kunnā lahu muqrinīn wa innā ilā rabbinā lamunqalibūn" (Glory be to Him Who has subjected this for us, for we could not have done it by ourselves. It is to our Lord that we will surely return), "Allāhumma innā nas’aluka fī safarinā hādha al-birra wat-taqwā wa min al-‘amali mā tardā, allāhumma hawwin ‘alaynā safaranā hādha watwi ‘annā bu‘dah, allāhumma anta as-sāhibu fis-safar wa al-khalīfatu fil ahl, allāhumma innī a‘ūdhu bika min wa‘thā’ as-safar wa ka’ābat al-manzhar wa sū’ il-munqalab fil māli wal ahl" (O Allah, we ask You on this journey of ours for goodness and piety, and for deeds that are pleasing to You. O Allah, make easy this journey for us and make its distance short for us. O Allah, You are the Companion on the journey and the One in Whose care we leave our family behind. O Allah, I seek refuge in You from this journey's hardships, and from the terrible sights in store and from a misfortunate return to our property and our family).
On returning, one should say the same and add the following:
"Āyibūn tā’ibūn ‘ābidūn lirabbinā hāmidūn" (We are returning in safety, turning to our Lord in repentance, worshiping Him, and praising Him). [Narrated by Muslim]

Answer: "Astawdi‘ukumllāh al-ladhī lā tadī‘u wadā’i‘h" (I entrust you to Allah Whose trusts are never lost). [Narrated by Ahmad and Ibn Mājah]

Answer: "Astawdi‘ullāha dīnak wa amānatak wa khawātīma ‘amalik" (I entrust to Allah your religion, your trust, and your final deeds). [Narrated by Ahmad and At-Tirmidhi]

Answer: "Lā ilāha illallāh wahdahu lā sharīka lah, lahul mulk walahul hamd yuhyī wa yumīt biyadihi al-khayr wahuwa ‘ala kulli shay’in qadīr" (There is no god but Allah alone, with no partner. To Him belong the dominion and all praise. He gives life and causes death and He is Ever-Living and He never dies. In His Hand lies all good, and He is competent over all things). [Narrated by At-Tirmidhi and Ibn Mājah]

Answer: "A‘ūdhu billāhi min ash-shaytān ar-rajīm" (I seek refuge with Allah from the accursed devil). [Agreed upon]

Answer: "Jazākallāhu khayran" (may Allah reward you). [Narrated by At-Tirmidhi]

Answer: "Bismillāh" (In the name of Allah). [Narrated by Abu Dāwūd]

Answer: "Alhamdulillāhi al-ladhī bini‘matihi tatimmu as-sālihāt" (Praise be to Allah with Whose favor good things are completed). [Narrated by Al-Hākim and others]

Answer: "Alhamdulillāh ‘ala kulli hāl" (Praise be to Allah in all cases). [Sahīh al-Jāmi‘]

Answer: A Muslim should say: "As-salāmu ‘alaykum warahmatullāhi wa barakātuh" (May the peace, mercy, and blessings of Allah be upon you).
His brother should return the greeting, saying: "Wa ‘alaykum as-salām warahmatullāhi wa barakātuh" (And may the peace, mercy, and blessings of Allah be upon you too). [Narrated by At-Tirmidhi, Abu Dāwūd, and others]

Answer: "Allāhumma sayyiban nāfi‘an" (O Allah, may it be beneficial rain). [Narrated by Al-Bukhāri]

Answer: "Mutirnā bifadlillāhi wa rahmatih" (We have been given rain by the grace and mercy of Allah). [Narrated by Al-Bukhāri and Muslim]

Answer: "Allāhumma innī as’aluka khayrahā wa a‘ūdhu bika min sharrihā" (O Allah, I ask You for its goodness and I seek refuge with You from its evil). [Narrated by Abu Dāwūd and Ibn Mājah]

Answer: "Subhāna al-ladhī yusabbihu ar-ra‘du bihamdihi wal malā’ikatu min khīfatih" (Glory be to the One by Whose praise the thunder exalts Him and the angels as well for fear of Him). [Muwatta’ Mālik]

Answer: "Alhamdulillāhi al-ladhī ‘āfānī mimma ibtalāka bihi wa faddalanī ‘ala kathīrin mimman khalaqa tafdīla" (Praise be to Allah Who has spared me what He has afflicted you with, and preferred me greatly above much of what He has created). [Narrated by At-Tirmidhi]

Answer: The Hadīth states: "If one of you sees something from his brother, himself, or his wealth which he finds amazing, then let him invoke blessings for it, for the evil eye is, indeed, true." [Narrated by Ahmad, Ibn Mājah, and others]

Answer: "Allāhumma salli ‘ala Muhammadin wa ‘ala āli Muhammadin kama sallayta ‘ala Ibrāhīm wa ‘ala āli Ibrāhīm, innaka hamīdun majīd. Allāhumma bārik ‘ala Muhammadin wa ‘ala āli Muhammadin kama bārakta ‘ala Ibrāhīm wa ‘ala āli Ibrāhīm, innaka hamīdun majīd" (O Allah, exalt the mention of Muhammad and the family of Muhammad as you exalted the mention of Abraham and the family of Abraham, You are Praiseworthy and Most Glorious. O Allah, bless Muhammad and the family of Muhammad as You blessed Abraham and the family of Abraham, You are Praiseworthy and Most Glorious). [Agreed upon]