In qalb, the objector attempts to turn the proponent’s own causal structure toward a contrary conclusion. ʿAks challenges the direction of an inference through a contrasting relationship. Fasād al-waḍʿ targets a cause placed in an unsuitable relation to the proposed ruling.
These objections cannot be classified merely by rhetorical phrasing. Ask whether the objector reverses the proposed inference, supplies a counter-direction, or challenges the suitability of the relation between cause and ruling.
Correction: State precisely what each objection attacks—causal suitability, direction of inference, or proof of the original ruling—before formulating a reply.