The Great Epic of the Bhārata dynasty 12.199.31

12.199.31

divākaro guṇamupalabhya nirguṇo yathā bhavedvyapagataraśmimaṇḍalaḥ |
tathā hyasau muniriha nirviśeṣavānsa nirguṇaṃ praviśati brahma cāvyayam || 31 ||

Man, agitated here (by attachments), is surely led to his last refuge like the wind leading a vessel tossed on the sea to a safe harbour at last. The Sun, spreading his rays, becomes the possessor of an attribute, (viz., the lighter of the world): withdrawing his rays (at the hour of setting), he once more becomes an object divested of attributes. After the same manner, a person, abandoning all distinctions (attachments), and betaking himself to penances, at last enters the indestructible Brahma which is divested of all attributes. By discerning Him who is without birth, who is the highest refuge of all righteous persons, who is self-born, from whom everything springs and unto whom all things return, who is unchangeable, who is without beginning, middle, and end, and who is certainty's self and supreme, a person attains to immortality (Emancipation).'"