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), and at that time Usamah bin Zaid, Uthman bin Talhah, and Bilal (may Allah be pleased with them) 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, and they remained inside for as long as Allah willed. Then when the Prophet (peace and blessings be upon him) came out, the first person I met was Sayyiduna Bilal (may Allah be pleased with him), and I asked him, "Where did the Prophet (peace and blessings be upon him) pray?" He replied, "Between the two front pillars." However, I forgot to ask him how many rak'ahs the Prophet (peace and blessings be upon him) prayed.