Lit: Obsolescence; non-prevalence of a thing due to lack of general interest. Tech: Non-use of a currency by the general public or obsolescence of a currency due to hyperinflation.
Wasiyyah
Riba al-fadl
Sa’is
Bai‘ al-khiyar
Ijarah Muntahia Bitamlik
Bai‘ al-mulamasah
Qibalatul kharaj
Jaridah
Bai‘ al-sadaqah hatta tuqbad
Shariah compliant