Musannaf Ibn Abi Shayba 13:2152

Abu Bakr narrated to us, he said: Waki’ narrated to us, from Sufyan, from Layth and al-Shaybani, from al-Sha’bi. And Sufyan [narrated] from al-A’mash, from Ibrahim, regarding a man who sells an item for cash, then buys it back for less than what he sold it for before he has received the payment; he disliked that.