Keep three layers distinct:
Al-Quduri's text: connected exceptions; smaller or larger shares; invalidity of a total exception; and value deduction for a dinar or qafiz.
Hanafi commentary: the rationale linked to price-function, Imam Muhammad's disagreement and the invalid garment example.
Instructional arithmetic: assuming that a dinar is worth 12 dirhams or a qafiz 18. These are invented classroom values, not historical rates reported by the book.
This prevents illustrative calculations from being mistaken for evidence about the source.
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Distinguishing text, commentary and illustration
Kitab al-Iqrar: Connected Exceptions, Quantities, and Cross-Category Exceptions
Keep three layers distinct:
Al-Quduri's text: connected exceptions; smaller or larger shares; invalidity of a total exception; and value deduction for a dinar or qafiz.
Hanafi commentary: the rationale linked to price-function, Imam Muhammad's disagreement and the invalid garment example.
Instructional arithmetic: assuming that a dinar is worth 12 dirhams or a qafiz 18. These are invented classroom values, not historical rates reported by the book.
This prevents illustrative calculations from being mistaken for evidence about the source.