The mineral deposits that are hidden in the earth and their excavation requires much labour such as gold, silver, oil, gas, etc.
Al-waqf al-‘amm
Al-bai‘ al-mabrur
Al-bai‘ al-mawquf
Al-bai‘ al-nafidh
’ahadith al-mu‘amalah
Al-mukhabarah
Al-mustahiqq
Al-mustakhrij
Asset ’ijarah bond
’ard al-waqf