Abu Ishaq al-Sabi'i (may Allah have mercy on him) said that a man came to Sayyiduna Uthman (may Allah be pleased with him) and said: O Commander of the Believers, I have committed a killing; can my repentance be accepted? Sayyiduna Uthman (may Allah be pleased with him) recited the first three verses of Surah Ghafir: 'Ha Mim. The revelation of the Book' up to His words 'severe in punishment' [Surah Ghafir: 1-3]. Then he said: Keep doing good deeds and keep repenting, and do not despair.
We have narrated hadiths from the Sunnah of the Messenger (peace and blessings be upon him) that confirm the saying of Abu Mijlaz, which has already passed in (15829) and (15830).
Hadith Referenceالسنن الكبرى للبيهقي / كتاب النفقات / 15834