Collateral that survives in custody is not the same as receipt of the price. The rules requiring receipt of salam capital and both sarf countervalues in the session remain binding.
If collateral is taken but no price is paid, the pledge does not perish and the parties separate, the relevant receipt requirement remains unmet. The future obligation to supply the muslam fīh is different: it becomes due at its specified time, not necessarily in the original session.
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If the pledge remains intact
Kitab al-Rahn: Salam, Sarf, Third-party Custody and Fungible Collateral
Collateral that survives in custody is not the same as receipt of the price. The rules requiring receipt of salam capital and both sarf countervalues in the session remain binding.
If collateral is taken but no price is paid, the pledge does not perish and the parties separate, the relevant receipt requirement remains unmet. The future obligation to supply the muslam fīh is different: it becomes due at its specified time, not necessarily in the original session.