I said to the Prophet ﷺ when he was in the cave - on one occasion he said: when we were in the cave -: If one of them looks at his feet, he will see us beneath his feet. He said: ʿO Abu Bakr, what do you think of two, of whom Allah is the third?ʿ
قَالَ قُلْتُ لِلنَّبِيِّ ﷺ وَهُوَ فِي الْغَارِ وَقَالَ مَرَّةً وَنَحْنُ فِي الْغَارِ لَوْ أَنَّ أَحَدَهُمْ نَظَرَ إِلَى قَدَمَيْهِ لَأَبْصَرَنَا تَحْتَ قَدَمَيْهِقَالَ فَقَالَ يَا أَبَا بَكْرٍ مَا ظَنُّكَ بِاثْنَيْنِ اللهُ ثَالِثُهُمَا