In the Sahīh, Jundub reports that the Prophet, peace and blessings be upon him, related that a man said, “Allah will not forgive so-and-so.” Allah then said, “Who is it who swears by Me that I will not forgive so-and-so? I have forgiven him and nullified your deeds.”
Al-Tirmidhī and Ibn Mājah report from Anas that the Messenger of Allah, peace and blessings be upon him, said:
“Every son of Adam sins, and the best of those who sin are those who repeatedly repent.”
He also said:
“When a servant commits a sin, a black spot appears on his heart. If he repents, desists and seeks forgiveness, his heart is polished clean. But if he continues to sin, it grows until it covers his heart. That is the covering of which Allah Most High said: ‘No! Rather, a covering has settled over