Bhagavad Gita · 18.42

शमो दमस्तपः शौचं क्षान्तिरार्जवमेव च।ज्ञानं विज्ञानमास्तिक्यं ब्रह्मकर्म स्वभावजम्॥

śhamo damas tapaḥ śhauchaṁ kṣhāntir ārjavam eva cha jñānaṁ vijñānam āstikyaṁ brahma-karma svabhāva-jam

Tranquility, self-control, austerity, purity, patience, honesty, knowledge, wisdom, and faith in God — these are the natural duties of a Brahmin.

— Bhagavad Gita 18.42

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)