وإن كان مترددا فيه طالبا له حسن تقويته بمؤكد
When the hearer hesitates about a judgment and seeks reassurance, strengthening it with an emphatic device is fitting.
This is the ṭalabī mode: “إِنَّ الطَّالِبَ نَاجِحٌ” — The student certainly succeeded. The particle “إِنَّ” reinforces the stated judgment.
Hesitation is not outright denial. A hesitant listener seeks confirmation; a denying listener resists the proposition. The degree and form of rhetorical emphasis should respond to this difference.