لَمْ وَلَمَّا وَلَامُ الْأَمْرِ وَلَا النَّهْيِ
The author first lists four single-verb governors: lam, lammā, command-lām, and prohibitive lā. Their meanings differ, but all govern a jussive imperfect.
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Textbook: Basic Governors
The Jussive Imperfect: Governors, Conditions, and Request Responses
لَمْ وَلَمَّا وَلَامُ الْأَمْرِ وَلَا النَّهْيِ
The author first lists four single-verb governors: lam, lammā, command-lām, and prohibitive lā. Their meanings differ, but all govern a jussive imperfect.