The Messenger of Allah ﷺ prayed behind Abu Bakr wrapped in a single garment draped over his shoulders.
حدثنا علي بن عاصم عن حميد الطويل
قال صلى رسول الله ﷺ خلف أبي بكر في ثوب متوشحا به
Its isnad is sahih, and it has already appeared many times. See 12554.