It is narrated from Sayyiduna Abu Shurayh (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever accepts his brother's request to cancel a sale, Allah Almighty will pardon his slip on the Day of Resurrection."
No one narrated this hadith from Abd al-Malik (may Allah have mercy on him) except Sharik (may Allah have mercy on him).