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Narrated Rabi'ah ibn AbuAbdurRahman: Rabi'ah reported on the authority of more than one person saying: The Apostle of Allah (peace_be_upon_him) 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.