Musannaf Ibn Abi Shaybah

Hazrat Abdullah says that there is no status of mistake in Islam, that is, after selling, to say that I made a mistake.

Hazrat Ibn Sirin would not validate this sale.

It is narrated from Hazrat Aamir that a person sold a pitcher to another by hand, then said that he had made a mistake. Hazrat Sha’bi said that this has no significance because trade is the name of deception, and Hazrat Qasim said: He will return the pitcher to him.

It is narrated from Hazrat Abdur Rahman that a Bedouin brought some camels. He was offered one hundred and thirty, one hundred and twenty dirhams for a camel, but he refused to sell. Then one of the brokers came to him and said, "I will buy all your camels from you for a thousand." The Bedouin sold them to him. Later, when the Bedouin calculated, he became very regretful and took his dispute to Hazrat Shurayh. He upheld the sale and said, "A sale is the name of deception."