The Messenger of Allah (PBUH) entered the Ka'bah with Usama ibn Zeid, 'Uthman ibn Talhah Al-Hajbeyy, and Bilal ibn Rabah, the he closed its door and stayed inside for a while. 'Abdullah ibn 'Umar said: So I asked Bilal when he came out, what did the Messenger of Allah (PBUH) do? He said: He stood with a pillar on his left, two pillars on his right, and three pillars behind him -the House at that time was on six pillars. Then he prayed.