الشمائل المحمدية

'Ubaid ibn Juraij said to Ibn 'Umar: "I saw you wearing the tanned ox-hide sandals with no hair on them [an-ni'al as-sibtiyya]." He replied: "I saw Allah’s Messenger (Allah bless him and give him peace) wearing the sandals on which there is no hair, and he performed the minor ritual ablution in them, so I love to wear them!”