Musannaf Ibn Abi Shayba 13:1950

Abu Bakr narrated to us, he said: Ishaq bin Mansur narrated to us, he said: Muhammad bin Muslim narrated to us, from Ibrahim bin Maysara, who said: I said to Tawus: "A man bargains with me for a commodity, and it is not with me, so he says: 'Buy it, and I will buy it from you,' and were it not for his position, I would not have bought it from you." Tawus disliked that.