ExpressionConstructionFunctionidhhabī / iʿlamīfeminine singular commandsaddressing the attendantlam aḥimnegation + jussivedenies retreatmā ziltuincomplete/auxiliary verbcontinuitylaw kānacounterfactual conditionimagined horse speechin yafʿalācondition + dualtwo adversaries
Law posits an unreal situation (“if the horse knew speech”), whereas the final in introduces a possible action of the two adversaries. Distinguishing them prevents a grammatical and interpretive error.