It is narrated from Sayyiduna Abdullah bin Umar (may Allah be pleased with him) that on the day of the conquest of Makkah, the Messenger of Allah (peace and blessings be upon him) was riding on the she-camel of Sayyiduna Usama bin Zaid (may Allah be pleased with him). In this manner, he entered Makkah and made the she-camel sit near the Ka'bah. Then the Prophet (peace and blessings be upon him) called for Uthman bin Talhah to bring the key of the Ka'bah. He brought the key, and the Prophet (peace and blessings be upon him) opened the door of the Ka'bah and entered inside. Sayyiduna Bilal (may Allah be pleased with him), Sayyiduna Uthman bin Talhah (may Allah be pleased with him), and Sayyiduna Usama (may Allah be pleased with him) also entered the Ka'bah with the Prophet (peace and blessings be upon him). They kept the door of the Ka'bah closed for quite some time. Sayyiduna Ibn Umar (may Allah be pleased with him) says: I was a strong young man, so I tried and managed to get ahead of the people. I found Sayyiduna Bilal (may Allah be pleased with him) standing at the door, so I asked him: At which place did the Messenger of Allah (peace and blessings be upon him) perform the prayer? He informed me: Between the two front pillars. I did not remember to ask how many rak'ahs the Prophet (peace and blessings be upon him) performed.