Musannaf Ibn Abi Shayba 13:115

Waki’ narrated to us, he said: Sufyan narrated to us, from Khalid ibn Dinar, from al-Harith, from Ibrahim. And from Sufyan, from Ibn Jurayj, from ‘Ata’, that they both disliked for a man to say to another man: "I will sell you this garment for a dinar except a dirham."