The last prayer the Messenger of Allah ﷺ performed was while he was seated, wrapped in a cloak.
حدثنا عبد الله بن الوليد حدثنا سفيان عن حميد
كان آخر صلاة صلاها رسول الله ﷺ عليه برد متوشحا به وهو قاعد
No references are available.
Its isnad is sahih, and it has already been mentioned at 12554.