540 - Mansur ibn Salamah al-Khuza'i said: 'Abd al-'Aziz ibn 'Abd Allah ibn Abi Salamah narrated to us, from 'Ubayd Allah ibn 'Umar, from Nafi', from Ibn 'Umar, who said: "In the time of the Prophet, peace and blessings of Allah be upon him, we did not consider anyone equal to Abu Bakr, then 'Umar, then 'Uthman, and then we would stop and not rank those after them."