Musnad Abu Ya'la al-Mawsili 105:46

Musa narrated to us, Abd al-Rahman ibn Mahdi narrated to us, from Ya'la ibn al-Harith, from Ghaylan ibn Jami', from Iyas ibn Salamah, from Ibn 'Ammar, from 'Ammar: That the Prophet, may Allah bless him and grant him peace, prayed in one garment.