Prophet of God (a.s) entered the House of God accompanied by Fazl ibn Abbas and Usamat ibn Zayd the year he conquered Mecca. When he left that House, he held the door knob in his hands and said: “Praise be to God who fulfilled His promise and acknowledged His servant, and conquered all the parties alone. God removed all the Arab's hatred and arrogance due to their lineage. You are all the children of Adam, and Adam was made of clay. The noblest one among you is the most pious one.”