Musannaf Ibn Abi Shayba 13:793

Abu Bakr narrated to us, he said: Ibn ‘Uyaynah narrated to us, from ‘Amr, from Tawus, who said: "If you sell food for a deferred term, and the term expires, then do not take food [in exchange for it]." He said: And Jabir ibn Zayd, Abu al-Sha’tha’, said: "When your debt expires, take whatever you wish for it."