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.
Akl al-suht
Al-amwal al-ribawiyah
Dhawu al fara'id
Mudaraba
Al-bai‘ al-jabari
’ard mulk
Muwakkil
Al-ijma
Ja'ihah
Sighah