Musnad Ahmad 1167:71

Waki' narrated to us, Mughirah ibn Ziyad narrated to us, from Abu 'Umar, the freed slave of Asma', who said: Asma' said: "O slave girl, hand me the jubbah (outer garment) of the Messenger of Allah, may Allah bless him and grant him peace." He said: "So she brought out a jubbah made of taylasān (a type of fabric/shawl)."