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.
Al- kharaj bildaman
Al-ijtihad
Al-muqtat
Al-mukhabarah
Al-mal
Al-munasabah
Al-qusarah
Al-muzar‘ah
Al-khatamah
Al-qana‘ah