Musannaf Ibn Abi Shayba 13:2623

Abu Bakr narrated to us, he said: Ibn ‘Uyaynah narrated to us, from Ibn Jurayj, from ‘Ata’, from Jabir, he said: The Messenger of Allah (may Allah bless him and grant him peace) forbade *al-muhaqalah* and *al-muzabanah*.