English Translation
Narrated Abu Bakr: I was with the Prophet in the Cave. When I raised my head, I saw the feet of the people. I said, "O Allah's Apostle! If some of them should look down, they will see us." The Prophet said, "O Abu Bakr, be quiet! (For we are) two and Allah is the Third of us."
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.