أَتُنْكِرُ أَثَرَهُ وَأَنْتَ تَرَاهُ فِي الطِّبِّ وَالزِّرَاعَةِ؟
Do you deny its effects although you see them in medicine and agriculture?
The claim gives the opposing view; the counter-question exposes tension with observable facts; laysa ... wa-lākinnahu corrects the definition; the conditional ending proposes a standard of evaluation. Each clause has a distinct argumentative role.
An inventory of interrogative, metaphor and restriction is incomplete unless it explains how the reply addresses the first speaker. Rhetoric must be read together with the argument’s structure.