Jami` at-Tirmidhi Book 49, Hadith 67
that the Prophet (ﷺ) saw Abu Bakr and 'Umar and said: "These two are the hearing and the seeing."
that the Messenger of Allah (ﷺ) said to Abu Bakr: "You are my companion at the Hawd, and my companion in the cave."
that the Prophet (ﷺ) said: "Order Abu Bakr to lead the people in Salat." 'Aishah said: "O Messenger of Allah! If Abu Bakr takes your place, the people will not be able to hear due to his crying, so order 'Umar to lead the people in Salat." She said: "So he said: 'Order Abu Bakr to lead the people in Salat.'" 'Aishah said: "So I said to Hafsah: 'Tell him that if Abu Bakr takes your place, then the people will not be able to hear due to his crying, so order 'Umar to lead the people in Salat.'" Upon this Hafsah did it. So the Messenger of Allah (ﷺ) said: "Indeed you are but like the companions of Yusuf! Order Abu Bakr to lead the people in Salat." So Hafsah said to 'Aishah: "I never received any good from you."