Jussive Deletion of the Final Weak Letter

Full Conjugation of the Yāʾ-Final Verb رَمَى يَرْمِي

The final weak letter drops in jussive singulars:

IndicativeJussiveDeleted
يَرْمِيلَمْ يَرْمِfinal yāʾ
تَرْمِيلَمْ تَرْمِfinal yāʾ
أَرْمِيلَمْ أَرْمِfinal yāʾ
يُرْمَىلَمْ يُرْمَfinal alif

The remaining kasrah in لَمْ يَرْمِ and fatḥah in لَمْ يُرْمَ are part of the properly formed jussives. They help identify the underlying stem even after deletion.