It is narrated from Sayyiduna Abdur Rahman bin Safwan that when the Prophet (peace and blessings be upon him) conquered Makkah, I thought in my heart that I should go home—which was on the way—put on my clothes, and see what the Prophet (peace and blessings be upon him) was doing. So I went and reached the Prophet (peace and blessings be upon him) when he had come out of the Ka'bah. The noble Companions were performing istilam; they had placed their cheeks on the House of Allah, and the Prophet (peace and blessings be upon him) was among all of them. I asked Sayyiduna Umar what the Prophet (peace and blessings be upon him) had done after entering the Ka'bah, so he informed me that the Prophet (peace and blessings be upon him) had performed two rak'ahs (units of prayer).