'Amr bin Dinar said: "I bear witness that I heard Ibn 'Umar asking about Al-Khibr (the agreement to Al-Mukhabarah) and he said: 'We did not see anything wrong with that, until Ibn Khadij told us earlier that he heard the Messenger of Allah forbidding Al-Khibr.'" Hammad bin Zaid was in accord with the two of them.