Jami` at-Tirmidhi Book 49, Hadith 69
that the Messenger of Allah (ﷺ) said: "It is not befitting that a group, among whom is Abu Bakr, be led by other than him."
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."
that the Messenger of Allah (ﷺ) said: "Whoever spends a pair of things in the path of Allah, he will be called in Paradise: 'O Worshiper of Allah, this is good.' And whoever is among the people of Salat, he will be called from the gate of Salat, and whoever was among from the people of Jihad, he will be called from the gate of Jihad. And whoever was among the people of charity, then he will be called from the gate of charity, and whoever was from the people of fasting, then he will be called from the gate of Ar-Rayyan." So Abu Bakr said: "May my father and mother be ransomed for you! The one who is called from these gates will be free of all worries. But will anyone be called from all of those gates?" He (ﷺ) said: "Yes, and I hope that you are among them."