English translation
[4080] 93 - (1592) It was narrated from Ma'mar bin 'Abdullâh that he sent his slave with a Sâ' of wheat and he said: "Sell it then buy barley." The slave went and took a Sâ' and part of a Sâ' more. When he came to Ma'mar he told him about that, and Ma'mar said to him: "Why did you do that? Go and give it back, and do not take anything but like for like, for I used to hear the Messenger of Allâh ﷺ say: 'Food for food, like for like.' And our food at that time was barley. It was said to him: 'It is not like it.' He said: 'I am afraid that it may be similar.'"
