Brahma-sukha-spṛṣṭam is also described in Bhagavad-gītā (18.54) :

brahma-bhūtaḥ prasannātmā na śocati na kāṅkṣati samaḥ sarveṣu bhūteṣu mad-bhaktiṁ labhate parām

“One who is transcendentally situated at once realizes the Supreme Brahman and becomes fully joyful. He never laments or desires to have anything; he is equally disposed toward every living entity. In this situation, he begins transcendental activities, or devotional service to the Lord.” Generally, once elevated to the transcendental platform of brahma-sukha, transcendental bliss, one never comes down. But if one does not engage in devotional service, there is a chance of his returning to the material platform. Āruhya kṛcchreṇa paraṁ padaṁ tataḥ patanty adho ’nādṛta-yuṣmad-aṅghrayaḥ: one may rise to the platform of brahma-sukha, transcendental bliss, but even from that platform one may fall down to the material platform if he does not engage himself in devotional service.