Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Salim, may Allah have mercy on him, that Hazrat Ibn Umar, may Allah be pleased with them both, sold a slave for eight hundred dirhams. The buyer found a defect in the slave and appeared before Hazrat Uthman, may Allah be pleased with him, for litigation. Hazrat Uthman, may Allah be pleased with him, inquired about it from Hazrat Ibn Umar, may Allah be pleased with them both. He replied, "At the time of sale, I had said that I am free from responsibility for every defect in him." Hazrat Uthman, may Allah be pleased with him, said, "Swear that I sold him the slave and at the time of sale there was no defect in him that I was aware of." Hazrat Ibn Umar, may Allah be pleased with them both, said, "At the time of sale, I had said that I am free from responsibility for every defect in him." Hazrat Uthman, may Allah be pleased with him, again said, "Swear that I sold him the slave and at the time of sale there was no defect in him that I was aware of." Hazrat Ibn Umar, may Allah be pleased with them both, refused to take the oath. Hazrat Uthman, may Allah be pleased with him, returned the slave to him. Later, Hazrat Ibn Umar, may Allah be pleased with them both, sold the same slave for fifteen hundred dirhams.