Musnad Abu Ya'la al-Mawsili 42:400

Zuhayr narrated to us, Muhammad bin Ubayd narrated to us, from al-A’mash, from Abu Sufyan, from Jabir, from Abu Sa’id al-Khudri, who said: I entered upon the Messenger of Allah (may Allah bless him and grant him peace) while he was praying, wrapped in a garment.