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.
Back-to-back ’istisna‘
Mudarabah Model
Bai‘ al-qimah
Price Deferred Sale
Ibn makhad
Sahib al-’ashghal
Bai‘ al-salam
Mubadalah
Sa’is
TalaqqI al-jalab