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.
Hibah bi shart al-iwad
Mann al-jubn wal ‘asl
Diwan dar al-durub
Irsad
Al-’anfal
Badal al-khuluw
Amanah
Al-daniq
Qimar
Ma al-bahr