Sunan an-Nasa'i 797
سنن النسائي#797SahihIt was narrated from Aisha may Allah be pleased with her, that the Messenger of Allah (ﷺ) told Abu Bakr to lead the people in prayer. She said:"The Prophet was in front of Abu Bakr and he prayed sitting down, and Abu Bakr was leading the people in prayer, and the people were behind Abu Bakr
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Abu GhuddahSahih
Al-AlbaniSahih
Zubair Ali ZaiIsnaad Sahih
In-book reference: 10:21