"I heard the Messenger of Allah (saas) say: 'Allahumma! Inni asa'luka bismikat-tahirit-tayyibil-mubarak al-ahabbi ilaika, alladhi idha du'ita bihi ajabta, wa idha su'ilta bihi a'taita, wa idhasturhimta bihi rahimta, wa idhastufrijta bihi farrajta (O Allah! I ask You by Your pure, good and blessed Name which is most beloved by You, which if You are called thereby You answer, and if You as asked thereby You give, if You are asked for mercy thereby You bestow mercy, and if You are asked for relief (from distress) thereby You grant relief.'"She said: "He said one day: 'O 'Aishah, do you know that Allah has told me the Name which, if He is called thereby, He responds?' I said: 'O Messenger of Allah, may my father and mother be ransomed for you! Teach it to me.' He said: 'You should not learn it, O 'Aishah.' So I moved aside and sat for a while, then I got up and kissed his head, then I said: 'O Messenger of Allah, teach it to me.' He said: 'You should not learn it, O 'Aishah, and I should not teach it to you, for you should not ask for any worldly things thereby.'" She said: "So I got up and performed ablution, then I prayed two Rak'ah, then I said: 'O Allah, I call upon Allah, and I call upon You, Ar-Rahman (the Most Gracious), and I call upon You, Al-Barr Ar-Rahim (The Most Kind, the Most Merciful), and I call upon You by all Your beautiful Names, those that I know and those that I do not know, (asking) that You forgive me and have mercy on me.' The Messenger of Allah (saas) smiled, then he said: 'It is among the names by which you called upon (Allah).'"

"The Prophet (saas) heard a man say: 'Allahumma! Inni as'aluka bi-annaka Antallahul-Ahadus-Samad, alladhi lam yalid wa lam yuwlud, wa lam yakun lahu kufuwan ahad (O Allah! I ask You by virtue of Your being Allah, the One, the Self-Sufficient Master, Who begets not nor was begotten, and there is none co-equal or comparable to Him).' The Messenger of Allah (saas) said: 'He has asked Allah by His Greatest Name, which if He is asked thereby He gives, and if He is called upon thereby He answers.'"

Messenger of Allah (saas) said: "No one among you should say: "O Allah, forgive me if You will.' Let him be definite in his asking, and no one can compel Allah."

Prophet saas used to seek refuge with Allah from cowardice, miserliness, old age, the torment of the grave and the tribulation of the heart. (Da'if)(One of the narrators) Waki' said: "Meaning when a man dies in a state of tribulation (Fitnah) and does not ask Allah to forgive him."

the Messenger of Allah (saas) said: "Seek refuge with Allah from poverty, insufficiency and humiliation, and from wronging (others) and being wronged.'"

Prophet (saas) would supplicate with these words: "Allahumma inni a'udhu bika min fitnatin-nari wa 'adhabin-nar, wa min fitnatil-qabri wa 'adhabil-qabr, wa min sharri fitnatil-ghina wa min sharri fitnatil-faqr, wa min sharri fitnatil-masihid-dajjal. Allahumma aghsil khatayaya bima'ith-thalfi wal-barad, wa naqqi qalbi minal-khataya kama naqqaytath-thawbal-abyad minad-danas. Wa ba'id bayni wa bayna khatayaya kama ba'adta baynal-mashriqi wal-maghrib. Allahumma inni a'udhu bika minal-kasali wal-harami wal-ma'thami wal-maghrami (O Allah, I seek refuge with You from the tribulation of the Fire and the torment of the Fire, and from the tribulation of the grave, and from the evil of the tribulation of richness and the evil of the tribulation of poverty, and from the evil of the trial of the False Christ. O Allah! Wash away my sins with the water of snow and hail, and cleanse my heart from sin as a white garment is cleansed from filth, and put a great distance between me and my sins, as great as the distance You have made between the east and the west. O Allah! I seek refuge with You from laziness and old age, and from sins and debt)."

"Fatimah came to the Prophet (saas) to ask him for a servant, and he said: 'I do not have anything to give you.' So she went back, but after that he came to her and said: 'Is what you asked for dearer to you, or something better than that?' 'Ali said to her: 'Say: something better than that.' So she said it. He said: 'Say: Allahumma Rabbas-samawatis-Sab'i wa Rabbal-'Arshil-'Azim, Rabbana wa Rabba Kulli shay'in, munzil at-Tawrati wal-Injili wal-Qur'anil-'Azim. Antal-Awwalu fa laysa qablaka shay', wa Antal-Akiru fa laysa ba'daka shay', Antaz-Zahiru fa laysa fawqaka shay', wa Antal-Batinu fa laysa dunaka shay', Iqdi 'annad-daina wa aghnina minal-faqr (O Allah, Lord of the seven heavens and Lord of the Mighty Throne, Our Lord, and the Lord of Everything, Revealer of the Tawrah, the Injil and the Magnificent Qur'an. You are the First and there is nothing after You; You are the Last and there is nothing after You. You are the Most High, and there is nothing above You, and You are the Most Near and there is nothing nearer than You. Settle our debts and make us free of want).'"

the Prophet (saas) said: "There is nothing more noble to Allah the Glorified, than supplication."

“The Messenger of Allah (ﷺ) said: ‘Whoever wakes up in the morning and says upon waking: La ilaha illallah wahdahu la sharika lahu, lahul-mulku wa lahul-hamdu, wa Huwa ‘ala kulli shay’in Qadir; Subhan-Allah walhamdu lillahi, wa la ilaha illallahu, wa Allahu Akbar, wa la hawla wa la quwwata illa billahil-‘Aliyil-‘Azim (None has the right to be worshipped but Allah alone, with no partner or associate. His is the dominion and all praise is to Him, and He is Able to do all things. Glory is to Allah, praise is to Allah, none has the right to be worshiped but Allah, Allah is the Most Great, and there is no power and no strength except with Allah, the Most High, the Most Supreme), then he supplicates Rabbighfirli (O Lord, forgive me), he will be forgiven.’”Walid said: “Or he said: then if he supplicated, it will be answered for him then if he stood up and performed ablution and then performed prayer, his prayer would be accepted.”

“Whenever the Messenger of Allah (ﷺ) woke up in the morning, he would say: ‘Al-hamdu lillahil-ladhi ahyana ba’dama amatana wa ilayhi’n-nushur (Praise is to Allah Who has given us life after taking it from us, and unto Him is the Resurrection).’”

“The Messenger of Allah (ﷺ) taught me some words to say at times of distress: Allah! Allahu Rabbi la ushriku bihi shay’an (Allah, Allah is my Lord, I do not associate anything with Him).”

“Allahumma inni a’udhu bika an adilla aw azilla, aw azlima aw uzlama, aw ajhala aw yujhala ‘alayya (O Allah, I seek refuge with You from going astray or stumbling, from wronging others or being wronged, and from behaving or being treated in an ignorant manner).”

“Bismillah, la hawla wa la quwwata illa billah, at-tuklanu ‘ala Allah (In the Name of Allah, there is no power and strength except with Allah, and trust is placed in Allah).”

“Whoever unexpectedly comes across a person suffering a calamity, and says: Al-hamdu Lillahil-ladhi ‘afani mim-mabtalaka bihi, wa faddalani ‘ala kathirin mimman khalaqa tafdila (Praise is to Allah Who has kept me safe from that which has afflicted you and preferred me over many of those whom He has created), will be kept safe from that calamity, no matter what it is.’”

Prophet (saas) said: "Your Lord is Kind and Most Generous, and is too kind to let His slave, if he raises his hands to Him, bring them back empty," or he said "frustrated."

"I heard the Messenger of Allah (saas) say: 'The supplication of a father reaches the Veil (i.e. the place of repentance).'"