The mineral deposits that are hidden in the earth and their excavation requires much labour such as gold, silver, oil, gas, etc.
Al-kaza'im
Al-jizyah
Al-amin al-khas
Al-dhimmi
’ard al-mamlakah
Faqih
Al-saduqah
Al-bai‘ bil raqam
Sulh fai’
Al-qaf'iz