ضَرَبْتُ — لَمْ يَضْرِبْ
The sukūn in ḍarabtu is building; in lam yaḍrib it is a jussive mood sign on an imperfect verb.
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Sukūn Is Not Jussive Here
The Past Verb: Definition, Building, Conjugation and Parsing
ضَرَبْتُ — لَمْ يَضْرِبْ
The sukūn in ḍarabtu is building; in lam yaḍrib it is a jussive mood sign on an imperfect verb.