Musannaf Ibn Abi Shayba 28:792

Hushaym ibn Bashir narrated to us, he said: Sayyar informed us, he said: Yazid al-Faqir narrated to us, he said: Jabir ibn Abdullah informed us that the Messenger of Allah (may Allah bless him and grant him peace) forbade on the day of Khaybar that the shares (of spoils) be sold until they are divided.