Sahih Muslim Book - 15, Hadith - 3233

وَحَدَّثَنِى زُهَيْرُ بْنُ حَرْبٍ حَدَّثَنَا يَحْيَى وَهُوَ الْقَطَّانُ ح وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِى شَيْبَةَ حَدَّثَنَا أَبُو أُسَامَةَ ح وَحَدَّثَنَا ابْنُ نُمَيْرٍ - وَاللَّفْظُ لَهُ - حَدَّثَنَا عَبْدَةُ عَنْ عُبَيْدِ اللَّهِ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ دَخَلَ رَسُولُ اللَّهِ -صلى الله عليه وسلم- الْبَيْتَ وَمَعَهُ أُسَامَةُ وَبِلاَلٌ وَعُثْمَانُ بْنُ طَلْحَةَ فَأَجَافُوا عَلَيْهِمُ الْبَابَ طَوِيلاً ثُمَّ فُتِحَ فَكُنْتُ أَوَّلَ مَنْ دَخَلَ فَلَقِيتُ بِلاَلاً فَقُلْتُ أَيْنَ صَلَّى رَسُولُ اللَّهِ -صلى الله عليه وسلم- فَقَالَ بَيْنَ الْعَمُودَيْنِ الْمُقَدَّمَيْنِ. فَنَسِيتُ أَنْ أَسْأَلَهُ كَمْ صَلَّى رَسُولُ اللَّهِ -صلى الله عليه وسلم-

It was narrated that Ibn ‘Umar said: “The Messenger of Allah entered the House, accompanied by Usamah, Bilal and ‘Uthman bin Talhah. They kept the door closed for a long time, then it was opened. I was the first one to go in, and I met Bilal. I said: ‘Where did the Messenger of Allah pray?’ He said: ‘Between the two front pillars.” But I forgot to ask him how many (Ra‘kah) the Messenger of Allah prayed.”