A sound classification proceeds in stages:
1. Identify the main meanings on each side.
2. Ask whether they are direct opposites, positive/negative forms, or linked through a further relationship.
3. For one opposed pair, test for ṭibāq; for several aligned pairs, test for muqābalah.
4. Check context, prepositions, and the objects of the relevant predicates.
This distinguishes “He gives life and death,” “Do not fear people; fear Me,” and “Let them laugh a little and weep much” by their appropriate structural criteria.