It is narrated from Sayyiduna Abu Umamah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The angel on the right is a trustee over the angel on the left. When the servant does a good deed, he records it, and when he does an evil deed, the angel on the right says to him (the one on the left): 'Wait six hours.' If he seeks forgiveness, he does not write it against him; otherwise he records one evil deed against him."
Hadith Referenceالمعجم الكبير للطبراني / باب الصاد / 7756