1895 – ʿUbayd Allāh ibn Aḥmad told us; he said: ʿAbd Allāh ibn Muḥammad ibn Ziyād told us; he said: Aḥmad ibn Manṣūr narrated to us; he said: Abū Ṣāliḥ narrated to us; he said: al-Layth informed me; he said: ʿAbd Allāh ibn Abī Jaʿfar related to me, from Abū al-Aswad, from Bukayr, from Nāfiʿ, from Ibn ʿUmar, that the Messenger of Allah ﷺ said: “When a man says to his brother, ‘You disbeliever,’ disbelief becomes binding upon one of the two.”