Chapter 18 · verse 42 · gita.yoga.org

Bhagavad Gita 18.42

शमो दमस्तपः शौचं क्षान्तिरार्जवमेव च।ज्ञानं विज्ञानमास्तिक्यं ब्रह्मकर्म स्वभावजम्

Serenity, self-restraint, austerity, purity, forgiveness, and uprightness, as well as knowledge, realization, and belief in God, are the duties of Brahmanas, born of their own nature.