Ordering Hadhrat Abu Bakr Siddiq (May Allah be well pleased with him) to lead the Salaat
The Holy Prophet (Sallallahu alaihi wa sallam) was still leading the Salaat. When He fainted repeatedly, He ordered Hadhrat Abu Bakr (May Allah be well pleased with him) to lead the Salaat. There is a Hadith in Sahih Muslim:
Translation: The Holy Prophet (Sallallahu alaihi wa sallam) sent a message to Hadhrat Abu Bakr (May Allah be well pleased with him) that he should lead the people in Salaat. Hadhrat Abu Bakr (May Allah be well pleased with him) was very softhearted. He told Hadhrat ‘Umar (May Allah be well pleased with him): O ‘Umar! You lead the people in Salaat. Hadhrat ‘Umar (May Allah be well pleased with him) replied: You are more worthy of leading people in Salaat. Thus, in these days, Hadhrat Abu Bakr (May Allah be well pleased with him) led the Salaat. Then the Holy Prophet (Sallallahu alaihi wa sallam) felt some relief. He came to the Masjid for Salaat Ul Zuhr along with 2 Companions, one of whom was Hadhrat ‘Abbas (and the other was Hadhrat ‘Ali (May Allah be well pleased with them)). At that moment, Hadhrat Abu Bakr (May Allah be well pleased with him) was leading the people in Salaat. When he saw the Holy Prophet (Sallallahu alaihi wa sallam), he started moving back and told both Companions: Seat me beside Abu Bakr. They seated the Holy Prophet (Sallallahu alaihi wa sallam) beside Hadhrat Abu Bakr (May Allah be well pleased with him). Hadhrat Abu Bakr (May Allah be well pleased with him) stood and started following the lead of the Holy Prophet (Sallallahu alaihi wa sallam) in Salaat and all other Companions listened to Hadhrat Abu Bakr (May Allah be well pleased with him) and offered Salaat. At that time, the Holy Prophet (Sallallahu alaihi wa sallam) was sitting and leading the Salaat. (Sahih Muslim, Hadith No. 963)