Abu Dawud
Tributes, Spoils And Rulership
Book Number: 013 / Hadith Number: 3055
Narated By Rabi'ah ibn AbuAbdurRahman : Rabi'ah reported on the authority of more than one person saying: The Apostle of Allah (pbuh) assigned as a fief to Bilal ibn al-Harith al-Muzani the mines of al-Qabaliyyah which is in the neighbourhood of al-Fur', and only zakat is levied on those mines up to the present day.