First ask whether the verse has a complete sense at the earlier proposed stopping point. Then ask whether extending the verse to the later ending also produces an intelligible and metrically admissible line.
A point where a required predicate or complement is still missing is not a valid ending. Nor does a later expression qualify merely because it happens to rhyme.
The accomplishment is an utterance capable of two coherent terminations, not an arbitrary accumulation of two rhyme words.
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Qalb, Tashrīʿ and Luzūm Mā Lā Yalzam: Completing the Verbal Ornaments
First ask whether the verse has a complete sense at the earlier proposed stopping point. Then ask whether extending the verse to the later ending also produces an intelligible and metrically admissible line.
A point where a required predicate or complement is still missing is not a valid ending. Nor does a later expression qualify merely because it happens to rhyme.
The accomplishment is an utterance capable of two coherent terminations, not an arbitrary accumulation of two rhyme words.