"The Prophet (ﷺ) became sick and when his disease became aggravated, he said, "Tell Abu Bakr to lead the prayer." `Aisha said, "He is a softhearted man and would not be able to lead the prayer in your place." The Prophet (ﷺ) said again, "Tell Abu Bakr to lead the people in prayer." She repeated the same reply but he said, "Tell Abu Bakr to lead the people in prayer. You are the companions of Joseph." So the messenger went to Abu Bakr (with that order) and he led the people in prayer in the lifetime of the Prophet.
Sahih al-Bukhari Book 10, Hadith 72
← Previous Hadith Abu Qilaba said, "Malik bin Huwairith came to this Mosque of ours and said, 'I pray in front of you and my aim is not to lead the prayer but to show you the way in which the Prophet (ﷺ) used to pray.' " I asked Abu Qilaba, "How did he use to pray?' " He replied, "(The Prophet (ﷺ) used to pray) like this Sheikh of ours and the Sheikh used to sit for a while after the prostration, before getting up after the first rak`a. "

Sahih al-Bukhari Book 10, Hadith 71 Next Hadith → the mother of the believers: Allah's Messenger (ﷺ) in his illness said, "Tell Abu Bakr to lead the people in prayer." I said to him, "If Abu Bakr stands in your place, the people would not hear him owing to his (excessive) weeping. So please order `Umar to lead the prayer." `Aisha added I said to Hafsa, "Say to him: If Abu Bakr should lead the people in the prayer in your place, the people would not be able to hear him owing to his weeping; so please, order `Umar to lead the prayer." Hafsa did so but Allah's Apostle said, "Keep quiet! You are verily the Companions of Joseph. Tell Abu Bakr to lead the people in the prayer. " Hafsa said to `Aisha, "I never got anything good from you."

Sahih al-Bukhari Book 10, Hadith 73