A poor, indigent person. The miskin is mentioned in the Qur'an as one of the recipients of zakah.
CLCs (Central Lending Certificates)
Mustajar
ACU (Asian Clearing Union)
Amanah
Bai‘ ’istighlal
Al-maks
Profit Sharing Cost Plus Model
Joint venture (Musharakah)
Uqiyah
Al-muhtakir