For the buyer to keep something as mortgage in case of a third party’s later claim on the goods; withholding a part of the price as a mortgage.
Batil
Bai‘ bil nasi’ah
Infaq
Al-falah
Bai al-thunya
Amanah
Riba al-nasi'ah
Al-kaza'im
Shirkah al-’abdan
’ard al-b‘al