Messenger of Allah, ﷺ entered the House, and Usama, Bilal and Uthman b. Talha were with him, and they kept the door closed for a considerable time. Then it was opened and I was the first to enter the House and meet Bilal, and I said: Where did Messenger of Allah ﷺ observe prayer? He said: Between these two front pillars. I, however, forgot to ask him the number of rak'ahs that he observed.  

دَخَلَ رَسُولُ اللَّهِ ﷺ الْبَيْتَ وَمَعَهُ أُسَامَةُ وَبِلاَلٌ وَعُثْمَانُ بْنُ طَلْحَةَ فَأَجَافُوا عَلَيْهِمُ الْبَابَ طَوِيلاً ثُمَّ فُتِحَ فَكُنْتُ أَوَّلَ مَنْ دَخَلَ فَلَقِيتُ بِلاَلاً فَقُلْتُ أَيْنَ صَلَّى رَسُولُ اللَّهِ ﷺ فَقَالَ بَيْنَ الْعَمُودَيْنِ الْمُقَدَّمَيْنِ فَنَسِيتُ أَنْ أَسْأَلَهُ كَمْ صَلَّى رَسُولُ اللَّهِ ﷺ  

he came to the Kabah when the Prophet, Bilal and Usamah bin Zaid had enter it, and Uthman bin Talhah had shut the door. They stayed there for a while, then he opened the door and the Prophet came out. I (Ibn Umar) Climed the steps and entered the House and said: "Where did the Prophet pray?" They said: "Here." And I forgot to ask them how many (Rakahs) the Prophet had prayed inside the House.  

أَنَّهُ انْتَهَى إِلَى الْكَعْبَةِ وَقَدْ دَخَلَهَا النَّبِيُّ ﷺ وَبِلاَلٌ وَأُسَامَةُ بْنُ زَيْدٍ وَأَجَافَ عَلَيْهِمْ عُثْمَانُ بْنُ طَلْحَةَ الْبَابَ فَمَكَثُوا فِيهَا مَلِيًّا ثُمَّ فَتَحَ الْبَابَ فَخَرَجَ النَّبِيُّ ﷺ وَرَكِبْتُ الدَّرَجَةَ وَدَخَلْتُ الْبَيْتَ فَقُلْتُ أَيْنَ صَلَّى النَّبِيُّ ﷺ قَالُوا هَا هُنَا وَنَسِيتُ أَنْ أَسْأَلَهُمْ كَمْ صَلَّى النَّبِيُّ ﷺ فِي الْبَيْتِ  

[Machine] "The Prophet ﷺ entered the Kaaba with Bilal, Usama, and Uthman, and the door was pushed shut behind them. I came and sat on the ground and they stayed for a while. When the Messenger of Allah ﷺ came out, I climbed the stairs and entered the house. I asked, 'Where did the Prophet ﷺ pray?' They replied, 'Here.' And I forgot to ask how many units he prayed."  

«دَخَلَ النَّبِيُّ ﷺ الْكَعْبَةَ وَمَعَهُ بِلَالٌ وَأُسَامَةُ وَعُثْمَانُ وَقَدْ أَجَافَ عَلَيْهِمُ الْبَابَ» فَجِئْتُ فَقَعَدْتُ بِالْأَرْضِ فَمَكَثُوا فِيهِ مَلِيًّا فَلَمَّا خَرَجَ رَسُولُ اللهِ ﷺ رَقِيتُ الدَّرَجَ فَدَخَلْتُ الْبَيْتَ فَقُلْتُ أَيْنَ صَلَّى النَّبِيُّ ﷺ؟ قَالُوا «هَهُنَا» وَنَسِيتُ أَنْ أَسْأَلَ كَمْ صَلَّى  

Where did Allah's Apostle ﷺ observe prayer? They said: At this very place. I, however, forgot to ask them about the (number of) rak'ahs that he observed. (Using translation from Muslim 1329e)  

أَنَّهُ انْتَهَى إِلَى الْكَعْبَةِ وَقَدْ دَخَلَهَا النَّبِيُّ ﷺ وَبِلَالٌ وَأُسَامَةُ بْنُ زَيْدٍ وَأَجَافَ عَلَيْهِمْ عُثْمَانُ بْنُ طَلْحَةَ الْبَابَ فَمَكَثُوا فِيهَا مَلِيًّا ثُمَّ فَتَحَ الْبَابَ فَخَرَجَ النَّبِيُّ ﷺ وَرَكِبْتُ الدَّرَجَةَ فَدَخَلْتُ الْبَيْتَ فَقُلْتُ أَيْنَ صَلَّى النَّبِيُّ ﷺ؟ فَقَالُوا هَاهُنَا وَنَسِيتُ أَنْ أَسْأَلَهُمْ كَمْ صَلَّى