Anas ibn Malik reported: The Messenger of Allah, peace and blessings be upon him, said:


قَالَ اللَّهُ تَبَارَكَ وَتَعَالَى يَا ابْنَ آدَمَ إِنَّكَ مَا دَعَوْتَنِي وَرَجَوْتَنِي غَفَرْتُ لَكَ عَلَى مَا كَانَ فِيكَ وَلَا أُبَالِي يَا ابْنَ آدَمَ لَوْ بَلَغَتْ ذُنُوبُكَ عَنَانَ السَّمَاءِ ثُمَّ اسْتَغْفَرْتَنِي غَفَرْتُ لَكَ وَلَا أُبَالِي يَا ابْنَ آدَمَ إِنَّكَ لَوْ أَتَيْتَنِي بِقُرَابِ الْأَرْضِ خَطَايَا ثُمَّ لَقِيتَنِي لَا تُشْرِكُ بِي شَيْئًا لَأَتَيْتُكَ بِقُرَابِهَا مَغْفِرَةً

Allah the Exalted said: O son of Adam, if you call upon me and place your hope in me, I will forgive you without any reservation. O son of Adam, if you have sins piling up to the clouds and then ask for my forgiveness, I will forgive you without any reservation. O son of Adam, if you come to me with enough sins to fill the earth and you meet me without associating a partner with me, I will come to you with enough forgiveness to fill the earth.

Source: Sunan At-Tirmidhi 3540