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Which is the singular feminine Haadhir active emphatic prohibition from ضَرَبَ — يَضْرِبُ?

Conjugating the Prohibitive with Heavy Noon (Active & Passive)

• لَا تَضْرِبِنَّ
• لَا تَضْرِبَنَّ
• لَا تَضْرِبُنَّ