Musnad Ahmad 1153:1610

'Abd al-Razzaq narrated to us, Sufyan narrated to us, from Talha ibn Yahya, from 'Ubayd Allah ibn 'Abd Allah ibn 'Utbah, from 'Aisha, that the Messenger of Allah (may Allah bless him and grant him peace) used to pray while wearing a *mirt* (a garment) of these patterned ones. The Messenger of Allah (may Allah bless him and grant him peace) would pray while some of it was upon him and some of it was upon me, and the *mirt* is of the black garments.