With reference to Islamic banks, they are investments in financial instruments using any of the suitable Islamic financial instruments.
Shirkah al-’abdan
Istifa al-qard
Al-katib
Diwan al-ma
Bai‘ al-munabadhah
Al-’ard al-ba’ida’
Al-darb fil ard
Shuf`ah
Al-diwan
Shirkah al-jabr