The duties of the four modes of life and the rituals laid down in the Vedas, O king, should always be followed by a Brahmana; he has no other duties.
चातुराश्रम्यधर्माश्च वेदधर्माश्च पार्थिवा ब्राह्मणेनानुगन्तव्या नान्यो विद्यात् कदाचन॥