The sale of goods that are unknown or undetermined as to their quantity, especially foodstuffs. Such a sale is considered invalid until the goods have been received by the purchaser.
Fuduli
Dar al-arqam
CDCs (Central Deposit Certificates)
Istidanah
Al-‘amir
Ijarah Fasidah
Al-hilm
Fi sabil Allah
Al-farsakh
Al-ta‘awun