Sahih al-Bukhari Book 10, Hadith 77
`Aisha said, "Allah's Messenger (ﷺ) ordered Abu Bakr to lead the people in the prayer during his illness and
so he led them in prayer." `Urwa, a sub narrator, added, "Allah's Messenger (ﷺ) felt a bit relieved and came
out and Abu Bakr was leading the people. When Abu Bakr saw the Prophet (ﷺ) he retreated but the
Prophet beckoned him to remain there. Allah's Messenger (ﷺ) sat beside Abu Bakr. Abu Bakr was following
the prayer of Allah's Messenger (ﷺ) and the people were following the prayer of Abu Bakr."
My father said, "When Allah's Messenger (ﷺ) became seriously ill, he was told about the prayer. He said, 'Tell Abu Bakr to lead the people in the prayer.' `Aisha said, 'Abu Bakr is a softhearted man and he would be overpowered by his weeping if he recited the Qur'an.' He said to them, 'Tell him (Abu Bakr) to lead the prayer. The same reply was given to him. He said again, 'Tell him to lead the prayer. You (women) are the companions of Joseph."
Allah's Messenger (ﷺ) went to establish peace among Bani `Amr bin `Auf. In the meantime the time of prayer was due and the Mu'adh-dhin went to Abu Bakr and said, "Will you lead the prayer, so that I may pronounce the Iqama?" Abu Bakr replied in the affirmative and led the prayer. Allah's Messenger (ﷺ) came while the people were still praying and he entered the rows of the praying people till he stood in the (first row). The people clapped their hands. Abu Bakr never glanced sideways in his prayer but when the people continued clapping, Abu Bakr looked and saw Allah's Messenger (ﷺ). Allah's Messenger (ﷺ) beckoned him to stay at his place. Abu Bakr raised his hands and thanked Allah for that order of Allah's Messenger (ﷺ) and then he retreated till he reached the first row. Allah's Messenger (ﷺ) went forward and led the prayer. When Allah's Messenger (ﷺ) finished the prayer, he said, "O Abu Bakr! What prevented you from staying when I ordered you to do so?" Abu Bakr replied, "How can Ibn Abi Quhafa (Abu Bakr) dare to lead the prayer in the presence of Allah's Messenger (ﷺ)?" Then Allah's Messenger (ﷺ) said, "Why did you clap so much? If something happens to anyone during his prayer he should say Subhan Allah. If he says so he will be attended to, for clapping is for women."