«أن تكون الألفاظ تابعة للمعاني دون العكس»
That words should follow meanings, not the reverse.
This is the governing principle for verbal ornaments. Sound patterning should enrich a meaningful, appropriate statement rather than force the intended sense into a distorted form merely to obtain rhyme or reversal.
A formally correct pattern can still weaken eloquence if it produces obscurity, unnatural diction or an unsuitable tone.