On the day of the conquest of Makkah, the Messenger of Allah ﷺ came down from the upper part of Makkah riding his mount, with Usama bin Zayd seated behind him. Bilal was with him, along with Uthman bin Talha, one of the custodians of the Kaaba, until he made his camel kneel inside the mosque. He then ordered Uthman to bring the key of the House. The door was opened, and the Messenger of Allah ﷺ entered, accompanied by Usama, Bilal, and Uthman. He remained inside for a long part of the day before coming out.The people rushed to enter, and Abdullah bin Umar was the first to get in. He found Bilal standing behind the door and asked him, "Where did the Messenger of Allah ﷺ pray?"Bilal pointed out to him the spot where he had prayed.Abdullah said, "But I forgot to ask him how many prostrations he had performed."
أن رسول الله ﷺ أقبل يوم الفتح من أعلى مكة على راحلته مردفا أسامة بن زيد، ومعه بلال ومعه عثمان بن طلحة من الحجبة حتى أناخ في المسجد، فأمره أن يأتي بمفتاح البيت ففتح ودخل رسول الله ﷺ ومعه أسامة وبلال وعثمان، فمكث فيها نهارا طويلا، ثم خرج فاستبق الناس، وكان عبد الله بن عمر أول من دخل، فوجد بلالا وراء الباب قائما، فسأله: أين صلى رسول الله ﷺ؟ فأشار له إلى المكان الذي صلى فيه، قال عبد الله: فنسيت أن أسأله: كم صلى من سجدة؟