And Harun ibn 'Abdullah narrated to me, Hajjaj ibn Muhammad narrated to us, he said: Ibn Jurayj said: Salih ibn Kaysan informed me, from Nafi', from Ibn 'Umar — may Allah be pleased with them both — that he used to report that the Prophet, peace and blessings be upon him, entered the state of ihram when his she-camel stood up with him upon it.