। ॥ ७५३ ॥
In plain words
When you drop the part that contradicts, and what is left — the part with no clash in it — does the pointing: that, say the clear-sighted ones who know how indication works, is bhāgalakṣaṇā, indication by a part.
Close to the Sanskrit
When, having wholly abandoned the contradictory part, the non-contradictory (part) is indicated — that, the discerning knowers of indication call bhāgalakṣaṇā.