The Prophet ﷺ arrived (at Mecca) in the year of the Conquest (of Mecca) while Usama was riding behind him on (his she-camel)'. Al-Qaswa.' Bilal and ʿUthman bin Talha were accompanying him. When he made his she-camel kneel down near the Kaʿba, he said to ʿUthman, "Get us the key (of the Kaʿba). He brought the key to him and opened the gate (of the Kaʿba), for him. The Prophet, Usama, Bilal and ʿUthman (bin Talha) entered the Kaʿba and then closed the gate behind them (from inside). The Prophet ﷺ stayed there for a long period and then came out. The people rushed to get in, but I went in before them and found Bilal standing behind the gate, and I said to him, "Where did the Prophet ﷺ pray?" He said, "He prayed between those two front pillars." The Kaʿba was built on six pillars, arranged in two rows, and he prayed between the two pillars of the front row leaving the gate of the Kaʿba at his back and facing (in prayer) the wall which faces one when one enters the Kaʿba. Between him and that wall (was the distance of about three cubits). But I forgot to ask Bilal about the number of rakʿat the Prophet ﷺ had prayed. There was a red piece of marble at the place where he (i.e. the Prophet) had offered the prayer.  

أَقْبَلَ النَّبِيُّ ﷺ عَامَ الْفَتْحِ وَهْوَ مُرْدِفٌ أُسَامَةَ عَلَى الْقَصْوَاءِ وَمَعَهُ بِلاَلٌ وَعُثْمَانُ بْنُ طَلْحَةَ حَتَّى أَنَاخَ عِنْدَ الْبَيْتِ ثُمَّ قَالَ لِعُثْمَانَ ائْتِنَا بِالْمِفْتَاحِ فَجَاءَهُ بِالْمِفْتَاحِ فَفَتَحَ لَهُ الْبَابَ فَدَخَلَ النَّبِيُّ ﷺ وَأُسَامَةُ وَبِلاَلٌ وَعُثْمَانُ ثُمَّ أَغْلَقُوا عَلَيْهِمِ الْبَابَ فَمَكَثَ نَهَارًا طَوِيلاً ثُمَّ خَرَجَ وَابْتَدَرَ النَّاسُ الدُّخُولَ فَسَبَقْتُهُمْ فَوَجَدْتُ بِلاَلاً قَائِمًا مِنْ وَرَاءِ الْبَابِ فَقُلْتُ لَهُ أَيْنَ صَلَّى رَسُولُ اللَّهِ ﷺ فَقَالَ صَلَّى بَيْنَ ذَيْنِكَ الْعَمُودَيْنِ الْمُقَدَّمَيْنِ وَكَانَ الْبَيْتُ عَلَى سِتَّةِ أَعْمِدَةٍ سَطْرَيْنِ صَلَّى بَيْنَ الْعَمُودَيْنِ مِنَ السَّطْرِ الْمُقَدَّمِ وَجَعَلَ باب الْبَيْتِ خَلْفَ ظَهْرِهِ وَاسْتَقْبَلَ بِوَجْهِهِ الَّذِي يَسْتَقْبِلُكَ حِينَ تَلِجُ الْبَيْتَ بَيْنَهُ وَبَيْنَ الْجِدَارِ قَالَ وَنَسِيتُ أَنْ أَسْأَلَهُ كَمْ صَلَّى وَعِنْدَ الْمَكَانِ الَّذِي صَلَّى فِيهِ مَرْمَرَةٌ حَمْرَاءُ  

[Machine] The Messenger of Allah ﷺ approached while Usamah was driving the camel, and with him were Bilal and Uthman bin Talhah until they reached the house. The Messenger said to Uthman, "Bring us the key." So he brought the key and opened the door for him. The Messenger of Allah ﷺ , Usamah, Bilal, and Uthman bin Talhah entered and the door was closed behind them. They stayed in the house for a long time and then the people started to enter. I hurried and found Bilal standing behind the people, so I asked, "Where did the Messenger of Allah ﷺ pray?" He said, "He prayed between the two front pillars, and he made the people stand behind his back while facing the direction you are facing."  

أَقْبَلَ رَسُولُ اللهِ ﷺ وَهُوَ مُرْدِفٌ أُسَامَةَ عَلَى الْعَضْبَاءِ وَمَعَهُ بِلَالٌ وَعُثْمَانُ بْنُ طَلْحَةَ حَتَّى أَنَاخَ عِنْدَ الْبَيْتِ فَقَالَ لِعُثْمَانَ «ائْتِنَا بِالْمِفْتَاحِ» فَجَاءَهُ بِالْمِفْتَاحِ فَفَتَحَ لَهُ الْبَابَ فَدَخَلَ رَسُولُ اللهِ ﷺ وَأُسَامَةُ وَبِلَالٌ وَعُثْمَانُ بْنُ طَلْحَةَ ثُمَّ أَغْلَقُوا عَلَيْهِمُ الْبَيْتَ فَمَكَثُوا فِيهِ طَوِيلًا ثُمَّ خَرَجَ فَابْتَدَرَ النَّاسُ الدُّخُولَ فَسَبَقْتُهُمْ فَوَجَدْتُ بِلَالًا قَائِمًا وَرَاءَ النَّاسِ فَقُلْتُ أَيْنَ صَلَّى رَسُولُ اللهِ ﷺ؟ قَالَ «صَلَّى بَيْنَ الْعَمُودَيْنِ الْمُقَدَّمَيْنِ وَجَعَلَ النَّاسَ مِنْ خَلْفِ ظَهْرِهِ وَاسْتَقْبَلَ بِوَجْهِهِ الَّذِي مُسْتِقْبِلُكَ»