It is narrated from Sayyiduna Ibn Umar (may Allah be pleased with them both) that the Prophet (peace and blessings be upon him) once entered the House of Allah (the Ka'bah). At that time, Usama bin Zaid (may Allah be pleased with him), Uthman bin Talhah (may Allah be pleased with him), and Sayyiduna Bilal (may Allah be pleased with him) were with the Prophet (peace and blessings be upon him). At the command of the Prophet (peace and blessings be upon him), Sayyiduna Bilal (may Allah be pleased with him) closed the door. Then when the Prophet (peace and blessings be upon him) came out, I asked Sayyiduna Bilal (may Allah be pleased with him), "What did the Prophet (peace and blessings be upon him) do inside?" He replied that the Prophet (peace and blessings be upon him) prayed, leaving two pillars on his right, one pillar on his left, and three pillars behind him. At that time, there was a distance of three cubits between the Prophet (peace and blessings be upon him) and the wall of the Ka'bah. Salim says that in those days, the House of Allah was built upon six pillars.