Sufyān reported from ʿAmr , who heard Ibn ʿUmar (رضي الله عنهما) say: “We used to practice mukhābara , and we saw nothing wrong with it, until Rāfiʿ ibn Khadīj claimed that the Messenger of Allāh (ﷺ) had prohibited it. So we abandoned it.” Reference: Musnad Aḥmad 11