Is it permissible to exchange the debt for a specific tangible item when immediate exchange is not a condition?
Chapter on Selling Assets and Fruits
Al-Mughni
Book of Sales
Primary text
If one substitutes the debt for a specific tangible item where immediate exchange is not a stipulated condition, separation before taking possession is permissible. This is analogous to saying, 'I sold you this barley for one hundred dirhams in your liability.'
Supporting text
There is an alternative view suggesting that separation before possession is not permitted because the sold item is a debt obligation, thus mirroring the prohibition found in advance payment sales (salam).