Musannaf Ibn Abi Shaybah 23237 — A man who buys something at a certain

It is narrated from Sayyiduna Abdullah bin al-Harith (may Allah be pleased with him) that a man passed by a group of people among whom the Prophet (peace and blessings be upon him) was also seated. He had with him a garment whose price he stated as more than its real price. The narrator said that it was a cloak (burd). Some of the people asked him: For how much did you buy it? I think he stated more than its price. Then he said: I have lied. The Noble Messenger (peace and blessings be upon him) was also present among them. Then he came back and said: O Messenger of Allah (peace and blessings be upon him), I bought it for such-and-such, less than what I had stated. He (peace and blessings be upon him) said: "Give in charity the excess you received."