Muwatta Imam Malik Book of Prayer in Congregation, Hadith 19

Yahya related to me from Malik from Hisham ibn Urwa from his father that the Messenger of Allah ﷺ came out during his illness, and approached and found Abu Bakr standing, leading the people in prayer. Abu Bakr began to go back, but the Messenger of Allah ﷺ indicated to him to stay where he was. The Messenger of Allah ﷺ sat by the side of Abu Bakr, and Abu Bakr prayed following the prayer of the Messenger of Allah ﷺ who was sitting, and the people prayed following the prayer of Abu Bakr.

وَحَدَّثَنِي عَنْ مَالِكٍ، عَنْ هِشَامِ بْنِ عُرْوَةَ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ ﷺ خَرَجَ فِي مَرَضِهِ فَأَتَى فَوَجَدَ أَبَا بَكْرٍ وَهُوَ قَائِمٌ يُصَلِّي بِالنَّاسِ فَاسْتَأْخَرَ أَبُو بَكْرٍ فَأَشَارَ إِلَيْهِ رَسُولُ اللَّهِ ﷺ أَنْ كَمَا أَنْتَ فَجَلَسَ رَسُولُ اللَّهِ ﷺ إِلَى جَنْبِ أَبِي بَكْرٍ فَكَانَ أَبُو بَكْرٍ يُصَلِّي بِصَلاَةِ رَسُولِ اللَّهِ ﷺ وَهُوَ جَالِسٌ وَكَانَ النَّاسُ يُصَلُّونَ بِصَلاَةِ أَبِي بَكْرٍ .