A valuer for estimating crops when still in the root, employed by the tax departments during the ‘Abbasid period (AD 750–945).
Al-ijarah thumma al-ba'i
Tawarruq
Al-bai‘ al-mutlaq
Musharakah Mutanaqisah
Al-daniq
Ilm tadbir al-manzil
Two-window model
Aqd
Israf
Riba al-nasi'ah