A wagering contract or a risky contract. It applies to all those contracts which may bring a reward without any human effort or to contracts that involve non-business risks.
Bai‘ habal al-habala
Al-ruqba
Shirkah al-tausiyah al-basitah
Dirham lil-ashya
Haram
Esham
Sales
Istifa
Iktisab al-halal
Al-madi