Sale of non-available goods. This type of contract is not valid in the Islamic commercial law.
Bai‘ al-gha’ib
Shirkah bila mal
Revolving Mudarabah
Riba al-sunnah
’akl al-suht
Saib al-bahr
Ida at al-mal
Dhira al-ammah
Zakah al-‘ain
Zakah al-’ard