O son of Adam, so long as you call upon Me

On the authority of Anas ibn Malik (may Allah be pleased with him), who heard the Messenger of Allah (may Allah bless him and grant him peace) say: “Allah the Exalted has said: "O son of Adam, so long as you call upon Me and place your hope in Me, I shall forgive you whatever you have done, and I shall not mind. O son of Adam, were your sins to reach the clouds of the sky and were you then to ask forgiveness of Me, I would forgive you. O son of Adam, were you to come to Me with sins nearly as great as the earth, and were you then to face Me ascribing no partner to Me, I would bring you forgiveness nearly as great as it."

Related by at-Tirmidhi, who said: “A hasan sahih hadith.”

[at-Tirmidhi 3540]