It was narrated from Abdullah bin Umar that the Messenger of Allah ﷺ entered the Ka'bah with Usamah bin Zaid, Bilal and Uthman bin Talha al Hajabi, and locked the door behind him. Abdullah bin Umar said: "I asked Bilal when he came out: " What did the Messenger of Allah ﷺ do?" He said: "He stood with one pillar to his left, two pillars to his right and three pillars behind him - at that time the House stood on six pillars - and he prayed with approximately three forearm's length between him and the wall." (Using translation from Nasāʾī 749)  

أَنَّ رَسُولَ اللهِ ﷺ دَخَلَ الْكَعْبَةَ هُوَ وَأُسَامَةُ بْنُ زَيْدٍ وَبِلَالٌ وَعُثْمَانُ بْنُ طَلْحَةَ الْحَجَبِيُّ فَأَغْلَقَهَا عَلَيْهِ قَالَ عَبْدُ اللهِ فَسَأَلْتُ بِلَالًا حِينَ خَرَجَ مَاذَا صَنَعَ رَسُولُ اللهِ ﷺ قَالَ «جَعَلَ عَمُودًا عَنْ يَسَارِهِ وَعَمُودَيْنِ عَنْ يَمِينِهِ وَثَلَاثَةَ أَعْمِدَةٍ وَرَاءَهُ وَكَانَ الْبَيْتُ يَوْمَئِذٍ عَلَى سِتَّةِ أَعْمِدَةٍ ثُمَّ صَلَّى وَجَعَلَ بَيْنَهُ وَبَيْنَ الْجِدَارِ نَحْوًا مِنْ ثَلَاثَةِ أَذْرُعٍ»