Bhagavad Gita
14.26

मां च योऽव्यभिचारेण भक्तियोगेन सेवते | स गुणान्समतीत्यैतान् ब्रह्मभूयाय कल्पते ||

māṁ ca yo 'vyabhicāreṇa bhakti-yogena sevate sa guṇān samatītyaitān brahma-bhūyāya kalpate

Translation

And one who serves Me with unswerving devotion through the yoga of devotion, having transcended these gunas, is fit to become Brahman.

Interpretation

Bhakti — unswerving, undeviating devotion — is the supreme method for transcending the gunas. This is the answer to Arjuna's practical question 'How does one go beyond the gunas?' The answer is: through loving devotion. Not through analysis of the gunas, not through extreme austerity, but through the love that naturally takes one beyond nature's push and pull. One who loves God completely is already standing in the freedom beyond the gunas. Such a devotee is fit for Brahman-realization — not as a future achievement but as the natural ripening of love.