। ॥ २० ॥
In plain words
Since it is thoroughly established that everything composed of parts is impermanent, the belief that celestial realms like Vaikuntha are eternal is simply the delusion of undiscerning minds.
Close to the Sanskrit
Everything's impermanence by having parts completely being established, the thought of permanence in Vaikuntha and the like is delusion indeed of deluded intellects.