Murabahah Funds, Sale of Debt (بيع الدين) and Mixed Funds

Read-only question overview. Answers and scoring remain inside authenticated learner attempts.

• After a Murabahah sale, what mainly remains in the fund?
• Murabahah-fund units representing mainly receivables can freely trade at any market price.
• What is Bai‘ al-Dain?
• Why is selling a debt of 100 for 90 problematic in the same currency?
• A debt created from a commodity sale remains the seller's ownership in that commodity.
• When may a Mixed Fund's units be negotiable under the rule presented?