What did the Prophet Muhammad (saw) do when Um Khalid bint Khalid came from Ethiopia to Medina?
 Narrated Um Khalid bint Khalid:                     When I came from Ethiopia (to Medina), I was a young girl. Allah's Apostle made me wear a sheet having marks on it. Allah's Apostle was rubbing those marks with his hands saying, "Sanah! Sanah!" (i.e. good, good).