Musannaf Ibn Abi Shayba 13:2872

Abu Bakr narrated to us, he said: Abd al-Rahman ibn Abd Allah, the freed slave of Amr ibn Hurayth, narrated to us, from his father, who said: A man from the people of the desert arrived with ten camels. He began to be offered one hundred and thirty and one hundred and twenty for a camel, but he would refuse. Then a man from the slave traders came to him and said, "I have taken them from you for one thousand, cash." So he sold them. When he calculated their value, he regretted it, so he disputed with him before Shurayh. Shurayh upheld the sale and said, "The sale is a deception."