Anas ibn Malik (raa) reported that Abu Bakr As-Siddiq (raa) reported: I saw the feet of the polytheists very close to us as we were in the cave.
I said: Allah’s Messenger (saws), if one amongst them were to see at his feet he would have surely seen us.
There upon he said: Abu Bakr (raa), what can befall two who have Allah as the third One with them.
The Book Pertaining to the Merits of the Companions (Allah Be Pleased With Them) of the Holy Prophet (May Peace Be Upon Him) (Kitab Al-Fada’il Al-Sahabah)
Muslim :: Book 31 : Hadith 5868