Muhrim is a person in the state of ihram. Halal (as a person) is the converse: one not in ihram.
In istadahu halalun, halalun is the nominative subject of the hunting verb: “a non-muhrim hunted it.”
Reading halal here solely as an adjective modifying meat would distort both the grammar and the legal rule.
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Bab Jinayat al-Muhrim — Exempt Animals, Predators, and Eating Game (Part V)
Muhrim is a person in the state of ihram. Halal (as a person) is the converse: one not in ihram.
In istadahu halalun, halalun is the nominative subject of the hunting verb: “a non-muhrim hunted it.”
Reading halal here solely as an adjective modifying meat would distort both the grammar and the legal rule.