Wasf means that a word describes a quality, such as colour or size. In أَحْمَرُ (red) and أَسْوَدُ (black), the words describe qualities. This adjectival meaning is one cause of منعِ صرف.
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Cause 1: Wasf (Adjectival Meaning)
Causes of Ghayr Munsarif: Wasf and the Pattern Af'al
Wasf means that a word describes a quality, such as colour or size. In أَحْمَرُ (red) and أَسْوَدُ (black), the words describe qualities. This adjectival meaning is one cause of منعِ صرف.