It is narrated from Ibn Abzi that when Sayyiduna Uthman bin Affan (may Allah be pleased with him) was besieged, Sayyiduna Abdullah bin Zubair (may Allah be pleased with him) said to him: I have excellent camels, I have prepared them for you, if you wish, you may proceed to Makkah, after that whoever wishes to come to you, may come and meet you. Sayyiduna Uthman (may Allah be pleased with him) said: No, I heard the Messenger of Allah (peace and blessings be upon him) say that in Makkah, a man from the Quraysh named Abdullah will commit heresy, upon him will be sins equal to half the sins of all people.