Jami` at-Tirmidhi Book 49, Hadith 74
that the Prophet (ﷺ) ordered the closing of all the gates, except for the gate of Abu Bakr. And there is a narration on this topic from Abu Sa'eed.
from Abu Hurairah, who said that the Messenger of Allah (ﷺ) said: "While a man was riding a cow it said: "I was not created for this, I was only created to till.'" So the Messenger of Allah (ﷺ) said: "I believe in that, myself, and Abu Bakr, 'Umar." Abu Salamah said: "And the two of them were not among the people that day ."
that Abu Bakr entered upon the Messenger of Allah (ﷺ), so he said: "You are Allah's 'Atiq from the Fire." From that day on he was called 'Atiq.