Both composite examples solve the allocation and equality question. They do not waive the requirement to take possession within the sarf session.
If 11 dirhams are exchanged for ten dirhams plus one dinar, but the dinar is left for future delivery, the contract faces a distinct prohibited-delay problem. The pertinent possession conditions must still be fulfilled for each monetary component.
Opening interactive controls...
Possession is not relaxed by mixing metals
Bab al-Sarf: Mixed Currency Exchanges, Debased Coins and Obsolescence
Both composite examples solve the allocation and equality question. They do not waive the requirement to take possession within the sarf session.
If 11 dirhams are exchanged for ten dirhams plus one dinar, but the dinar is left for future delivery, the contract faces a distinct prohibited-delay problem. The pertinent possession conditions must still be fulfilled for each monetary component.