In tajtahid tanjaḥ is conditional; the two imperfect verbs are jussive. Inna aṭ-ṭāliba mujtahidun is emphatic and governs a noun and predicate.
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Conditional In versus Emphatic Inna
Choosing the Correct Parsing: Meaning, Governance and Context
In tajtahid tanjaḥ is conditional; the two imperfect verbs are jussive. Inna aṭ-ṭāliba mujtahidun is emphatic and governs a noun and predicate.