And for this reason, Ibn ‘Umar and Ibn ‘Abbās used to instruct people to perform tamattu‘.
Ahmad said:
‘Abd al-Razzāq informed us: Ma‘mar narrated to us, from al-Zuhrī, from Sālim, who said: Ibn ‘Umar was asked about tamattu‘ in Hajj, and he instructed people to perform it. He was told, “You are contradicting your father.” He replied, “‘Umar did not say what you claim. He merely said that Hajj should be performed separately from ‘umrah, as this makes ‘umrah more complete—or that ‘umrah is not complete during the months of Hajj unless a sacrificial offering is made. He wanted the House to be visited outside the months of Hajj. Yet you have made tamattu‘ forbidden and punished people for it, although Allah has permitted it and the Messenger of Allah, may Allah bless him and grant him peace, practised it.” When they persisted in arguing with him, he would say, “Which is more deserving of being followed: the Book of Allah or ‘Umar?”
Ibn ‘Abbās also used to instruct people to perform it. They would say, “Abū Bakr and ‘Umar did not perform it.” He would reply, “Stones may soon rain down upon you from heaven! I tell you, ‘The Prophet, may Allah bless him and grant him peace, said,’ and you say, ‘Abū Bakr and ‘Umar said’!”
‘Urwah ibn al-Zubayr used to debate Ibn ‘Abbās about it. He said, “Abū Bakr and ‘Umar knew the Messenger of Allah, may Allah bless him and grant him peace, better than you.” Ibn ‘Abbās replied, “‘Urayyah, ask your mother.” He meant that she would tell him that the Prophet, may Allah bless him and grant him peace, had instructed his Companions to leave ihram; Asmā’ was among those who had done so. This dispute arose only because Ibn ‘Abbās held tamattu‘ to be obligatory