Bhagavad Gita Chapter 8.11
yad akṣaraḿ veda-vido vadanti
viśanti yad yatayo vīta-rāgāḥ
yad icchanto brahma-caryaḿ caranti
tat te padaḿ sańgraheṇa pravakṣye
Translation
Persons who are learned in the Vedas, who utter omkara and who are great sages in the renounced order enter into Brahman. Desiring such perfection, one practices celibacy. I shall now briefly explain to you this process by which one may attain salvation.