Musnad Ahmad 33:682

Zakariya narrated to us, Ubaydullah informed us, from Abdullah ibn Muhammad ibn Aqil, from Jabir, who said: He prayed with his companions in his house. We said to him: "Pray with us as you saw the Messenger of Allah, may Allah bless him and grant him peace, pray." He said: So he prayed with us in a wrapper (milhafah) which he tied under his breasts (thunduwatin), and he said: "Thus I saw the Messenger of Allah, may Allah bless him and grant him peace, pray."