Investments that do not generate financial income and cannot be financed on a participatory basis. Examples are: lighthouses, military airfields, public schools, etc.
T‘awid
Bai al-'inah
Daman
Mudd shari‘
Riba al-fadl
Awqaf al-nuqud
Al-’amanah
Istiqlal
Fiqh al-mu'amalat
Ruq‘ah al-sairif