“The Messenger of Allah ﷺ entered the Ka’bah on the Day of the Conquest (of Makkah), with Bilal and ‘Uthman bin Shaibah, and they locked the door behind them from the inside. When they came out, I asked Bilal: ‘Where did the Messenger of Allah ﷺ pray?’ He told me that when he entered, he turned to his right and prayed in the direction that he was facing, between the two columns.” (Using translation from Ibn Mājah 3063)
«دَخَلَ رَسُولُ اللهِ ﷺ يَوْمَ الْفَتْحِ الْكَعْبَةَ وَمَعَهُ بِلَالٌ وَعُثْمَانُ بْنُ طَلْحَةَ بْنِ شَيْبَةَ فَأَغْلَقُوا عَلَيْهِمْ مِنْ دَاخِلٍ» فَلَمَّا خَرَجُوا سَأَلْتُ بِلَالًا أَيْنَ صَلَّى رَسُولُ اللهِ ﷺ؟ فَأَخْبَرَنِي أَنَّهُ «صَلَّى عَلَى وَجْهِهِ حِينَ دَخَلَ جَعَلَ الْعَمُودَيْنِ عَنْ يَمِينِهِ» قَالَ «ثُمَّ لُمْتُ نَفْسِي أَنْ لَا أَكُونَ سَأَلْتُهُ كَمْ صَلَّى»