Different literary cultures have not always identified metre and rhyme in the same fashion. Some systems pay close attention to sound length or the counting of units, while others make distinct structural choices about words and lines.
Older Indian verse traditions, for instance, employ patterns of phonetic counting that do not map neatly onto every term of Arabic ʿarūḍ. Applying one tradition’s technical definitions to all others can therefore mislead.
The broader insight: formal rules of verse have historical and linguistic shapes, whereas listeners across traditions can recognize balanced expression, pleasing sound, and appropriate rhetorical effect.