भावे चोपलब्धेः ॥ १५ ॥
bhāve copalabdheḥ || 15 ||
bhāve—On the existence; ca—and; upalabdheḥ—is experienced.
15. And (because) on the existence (of the cause) is (the effect) experienced.
The effect is not experienced in the absence of the cause, which shows that the effect is not different from the cause. The world phenomena appear only because Brahman exists and not without It. Hence the world is non-different from Brahman.