The ghallah discussion concerns the condition and commercial acceptance of particular silver pieces. Quduri next turns to the predominant material of coins: precious metal or adulterating metal.
These are different legal questions. One concerns a coin's integrity and weight; the other determines whether a coin still carries the classification of silver or gold, or is treated as a composite material.
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Not every imperfect coin has the same rule
Bab al-Sarf: Mixed Currency Exchanges, Debased Coins and Obsolescence
The ghallah discussion concerns the condition and commercial acceptance of particular silver pieces. Quduri next turns to the predominant material of coins: precious metal or adulterating metal.
These are different legal questions. One concerns a coin's integrity and weight; the other determines whether a coin still carries the classification of silver or gold, or is treated as a composite material.