Lit: Lands irrigated by running water (of rivers and valleys). Tech: A category of land taxed most heavily since it involved the least human effort.
Rahn
Shuf`ah
Al-tabkhis
Al-istighna
Illah
Al-jarah wa al-Iqtina'
Shirkah al-taqbil
Al-katib
Al-‘arif
Bait al-mal