Mishkat al-Masabih #2234

Shaddad b. Aus reported God’s messenger as saying that the best manner of asking pardon is to say, “O God, Thou art my Lord. There is no god but Thee. Thou hast created me, and I am Thy servant and hold to Thy covenant and promise as much as I can. I seek refuge in Thee from the evil of what I have done. I acknowledge Thy favour to me, and I acknowledge my sin. Pardon me, for none but Thee pardons sins.” He said that if anyone says it during the day-time with firm belief in it and dies that day before evening, he will be one of those who go to paradise; and if anyone says it during the night with firm belief in it and dies before morning, he will be one of those who go to paradise. Bukhari transmitted it.