Al-Tirmidhi HadithHadith 442 Narrated byAnas ibn Malik

Anas heard the Prophet (peace be upon him) say: Allah, the Exalted, has said: "O son of Adam! Certainly I shall continue to pardon thee so long as thou supplicatest Me and hopest (for My forgiveness), whatever may be thy faults and sins, I don't care. O son of Adam, even if thy sins pile up as high as the sky, and thou askest for My forgiveness, I will forgive thee. O son of Adam, if thou comest to Me with an earthful of defaults and meetest Me, not associating anything with Me, I will come to thee, with an earthful of forgiveness."