«وَمِنْهُ الْمُوَازَنَةُ: وَهِيَ تَسَاوِي الْفَاصِلَتَيْنِ فِي الْوَزْنِ دُونَ التَّقْفِيَةِ»
“Muwāzanah is equality of the two endings in metrical pattern, without rhyming.”
For sajʿ, agreement in the terminal letter is central; in muwāzanah, balanced word form is primary. They can coincide, but their definitions are distinct.
Practical test: If two final words have an equivalent formal weight but differ in final consonants, they may exemplify balancing rather than ordinary rhymed prose.