The commentator’s statement: Paper currency has the ruling of a debt, so it does not take the ruling of trade goods or gold and silver!

Question:
He says: Honorable Shaykh, may Allah grant you success. The commentator on the book *Akhassar al-Mukhtasirat* mentioned that paper currency does not have the ruling of trade goods, nor the ruling of gold and silver, but rather its ruling is the ruling of a debt. So it is a document for a debt. What is its ruling? Its ruling is the ruling of a debt. The ruling of a debt. This is his opinion, not that it is correct.

Answer:
Its ruling is the ruling of the substitute. Gold and silver are the substitute for gold and silver. The substitute has the ruling of what it substitutes for. So it takes the place of gold and silver. Yes.