Musnad Abi Ya'la 4226 — he said: I heard the Prophet ﷺ say: By the One

It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that he said: I heard the Prophet (peace and blessings be upon him) say: "By the One in whose hand is my soul, if you were to commit so many sins that your sins filled the space between the heaven and the earth, and then you sought forgiveness from Allah Almighty, He would certainly forgive you. And by the One in whose hand is the soul of Muhammad (peace and blessings be upon him), if you did not sin, Allah Almighty would bring a people who would sin, then seek forgiveness from Allah, and Allah would forgive them."