The Prophet (peace and blessings be upon him) granted Bilal bin al-Harith al-Muzani (may Allah be pleased with him) the mines of al-Qabaliyyah, in the direction of al-Fur', as a fief. Nothing was taken from those mines except zakah, up to this day.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب إحياء الموات / 11841
It is reported from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that the Messenger of Allah (peace and blessings be upon him) gave Sayyiduna Bilal bin al-Harith (may Allah be pleased with him) the mines of al-Qabaliyyah, both its highland and its lowland parts, and wherever cultivation was suitable.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب إحياء الموات / 11842