God says
Know, then, [O man,] that there is no deity save God, and [while there is yet time,] ask forgiveness for thy sins and for [the sins of] all other believing men and women: … Q.47:19
O our Sustainer! Grant us good in this world and good in the world to come and save us from the suffering of the Fire. -- Q.2:201
O our Lord! Make us not bear burdens which we have no strength to bear! And efface Thou our sins and grant us forgiveness and bestow Thy mercy upon us! Thou are our Lord Supreme: help us, then, against people who deny the truth! -- Q.2:286
“O our Sustainer! We have sinned against ourselves -- and unless Thou grant us forgiveness and bestow Thy mercy upon us, we shall most certainly be lost!” -- Q.7:23
“O my Sustainer! Cause me and my offspring to remain constant in prayer” -- Q.14:40
“(O our Sustainer!) Grant Thy forgiveness unto me, and my parent, and all the believers, on the Day when all the (last) reckoning will come to pass.” -- Q.14:41
“O our Lord! Bestow on us grace from Thyself, and endow us, whatever our (outward) condition, with consciousness of what is right!” -- Q.18:10
“O our Sustainer! Grant unto us spouses and offspring who will be the comfort of our eyes, and give us (Thy grace) to lead the righteous.” -- Q.25:74
“O our Lord! Cause this our light to shine for us forever, and forgive us our sins: for, verily, Thou have the power to will anything!” -- Al-Qur’an
Prophet said
Supplication of the Prophet mostly was, ‘O God! Grant us good in this world, and good in the world to come, and save us from the suffering of the Fire.’ (Q.2:201) -- H: Bukhari and Muslim. N: Anas
‘When you are overcome (by grief or anxiety) say: God is sufficient for me – and how good is the One trusted (HASBUNAL LAHU WA NI’AMAL WAKEEL) -- H: Abu Daud. N: Arf-b-Malek.
