Yahya related to me from Malik from Yahya ibn Said from Salim ibn Abdullah that Abdullah ibn Umar sold one of his slaves for eight hundred dirhams with the stipulation that he was not responsible for defects. The person who bought the slave complained to Abdullah ibn Umar that the slave had a disease which he had not told him about. They argued and went to Uthman ibn Affan for a decision . The man said, "He sold me a slave with a disease which he did not tell me about." Abdullah said, "I sold to him with the stipulation that I was not responsible." Uthman ibn Affan decided that Abdullah ibn Umar should take an oath that he had sold the slave without knowing that he had any disease. Abdullah ibn Umar refused to take the oath, so the slave was returned to him and recovered his health in his possession. Abdullah sold him afterwards for 150O dirhams.