For “100 and three garments,” the commentary treats the entire expression as 103 garments. The plural athwāb provides a common specification for the two numeric elements.
Unlike “100 and a garment,” this construction names a numbered group followed by a plural unit. The distinction comes from the commentary and must not be flattened into a universal rule.
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A different construction with three garments
Kitab al-Iqrar: Conjoined Amounts, Divine-Will Clauses, and Options
For “100 and three garments,” the commentary treats the entire expression as 103 garments. The plural athwāb provides a common specification for the two numeric elements.
Unlike “100 and a garment,” this construction names a numbered group followed by a plural unit. The distinction comes from the commentary and must not be flattened into a universal rule.