The mineral deposits that are hidden in the earth and their excavation requires much labour such as gold, silver, oil, gas, etc.
Mugharasah
Al-yamin al-ghamus
Jagir
Iman bil gha'ib
Al-’amin al-khass
Al-tassuj
Jahiliyyah
Al-radkh
Daman al-khusran
Al-nawa’ib