Ibn Majah

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."

when a man had come to the Messenger of Allah (saas), he heard him say: "O Messenger of Allah, what should I say when I ask of Allah?" He said: "Say: Allahumma-ghfirli warhamni wa 'afini warzuqni (O Allah, forgive me, have mercy on me, keep me safe and sound and grant me provision)," and he held up his four fingers apart from the thumb and said: "These combine your religious and worldly affairs."

the Messenger of Allah (saas) taught her this supplication: "Allahumma inni as'aluka minal-khayri kullihi, 'ajilihi wa ajilihi, ma 'alimtu minhu wa ma la a'lam. Wa a'udhu bika minash-sharri kullihi, 'ajilihi wa ajilihi, ma 'alimtu minhu wa ma la a'lam. Allahumma inni as'aluka min khayri ma sa'alaka 'abduka wa nabiyyuka, wa a'udhu bika min sharri ma 'adha bihi 'abduka wa nabiyyuka. Allahumma inni as'alukal-jannatah wa ma qarrab ilayha min qawlin aw 'amalin, wa a'udhu bika minan-nari wa ma qarraba ilayha min qawlin aw 'amalin, wa as'aluka an taj'al kulla qada'in qadaytahuli khayran (O Allah, I ask You for all that is good, in this world and in the Hereafter, what I know and what I do not know. O Allah, I seek refuge with You from all evil, in this world and in the Hereafter, what I know and what I do not know. O Allah, I ask You for the good that Your slave and Prophet has asked You for, and I seek refuge with You from the evil from which Your slave and Prophet sought refuge. O Allah, I ask You for Paradise and for that which brings one closer to it, in word and deed, and I seek refuge in You from Hell and from that which brings one closer to it, in word and deed. And I ask You to make every decree that You decree concerning me good)."

the Messenger of Allah (saas) said to a man: "What do you say during your prayer?" He said: "I recite the Tashah-hud then I ask for Allah for Paradise and see refuge with Him from Hell, but by Allah I do not understand your whispering or the whispering of Mu'adh." He said: "It is concerning them (Paradise and Hell) that we are whispering."

"A man come to the Prophet (saas) and said: 'O Messenger of Allah, what supplication is best?' He said: 'Ask your Lord for forgiveness and to be kept safe and sound in this world and in the Hereafter.' Then (the man) came the next day and said: 'O Messenger of Allah, what supplication is best?' He said: 'Ask your Lord for forgiveness and to be kept safe and sound in this world and in the Hereafter.' Then (the man) came the third day and said: 'O Prophet of Allah, what supplication is best?' He said: 'Ask your Lord for forgiveness and to be kept safe and sound in this world and in the Hereafter, for if you are forgiven and kept safe and sound in this world and the Hereafter, you will have succeeded.'"

he heard Abu Bakr, when the Prophet (saas) had passed away, saying: "The Messenger of Allah (saas) stood in this place where I am standing, last year." Then Abu Bakr wept, then he said: "You must adhere to the truth, for with it comes righteousness and they both lead to Paradise. And you must beware of lying for with it comes immorality, and they both lead to Hell. Ask Allah for Al-Mu'afah, for no one is given anything after certainty that is better than Mu'afah. Do not envy one another, do not hate one another, do not sever ties with one another, do not turn your backs on one another and be, O slaves of Allah, brothers."

"O Messenger of Allah, what do you think I should say in my supplication, if I come upon Laylatul-Qadr?" He said: "Say: 'Allahumma innaka 'afuwwun tuhibbul-'afwa, fa'fu 'anni (O Allah, You are Forgiving and love forgiveness, so forgive me).'"

"The Messenger of Allah (saas) said: 'There is no supplication that a person can say that is better than: Allahumma inni as'aluka al-mu'afah fid-dunya wal-akhirah (O Allah, I ask You for Al-Mu'afah in this world and in the Hereafter).'"