أَوْ صِفَةً لِلْمُؤَنَّثِ، نَحْوَ «يَا فَسَاقِ»
Translation: Or as a feminine epithet, as in 'O wicked woman!'
Here «فَسَاقِ» describes someone; it is not a command.
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Fasāqi: A Feminine Epithet
Asmāʾ al-Afʿāl — Definition, Uses and Parsing
أَوْ صِفَةً لِلْمُؤَنَّثِ، نَحْوَ «يَا فَسَاقِ»
Translation: Or as a feminine epithet, as in 'O wicked woman!'
Here «فَسَاقِ» describes someone; it is not a command.