तद्य एवैतं ब्रह्मलोकं ब्रह्मचर्येणानुवि-न्दन्ति तेषामेवैष ब्रह्मलोकस्तेषां सर्वेषु लोकेषु कामचारो भवति ॥ ३ ॥
In plain words
Those who discover this world of Brahman through disciplined spiritual restraint—to them alone does this world belong, and for them there is absolute freedom in every realm.
Close to the Sanskrit
Those who indeed discover this world of Brahman through celibacy—for them alone is this world of Brahman. For them there is freedom of movement in all worlds.