Mbh 12.354.1a

"'Bhishma said, "In an excellent town called by the name of Mahapadma which was situate on the southern side of the river Ganga, there lived, O best of men, a Brahmana of concentrated soul. Born in the race of Atri, he was endued with amiability. All his doubts had been dispelled (by faith and contemplation) and he was well conversant with the path he was to follow. Ever observant of the religious duties, he had his anger under perfect control. Always contented, he was the complete master of his senses. Devoted to penances and study of the Vedas, he was honoured by all good men. He earned wealth by righteous means and his conduct in all things corresponded with the mode of life he led and the order to which he belonged. The family to which he belonged was large and celebrated. He had many kinsmen and relatives, and many children and spouses. His behaviour was always respectable and faultless. Observing that he had many children, the Brahmana betook himself to the accomplishment of religious acts on a large scale. His religious observances, O king, had reference to the customs of his own family.[1926] The Brahmana reflected that three kinds of duties have been laid down for observances. There were first, the duties ordained in the Vedas in respect of the order in which he was born and the mode of life he was leading (viz., a Brahmana in the observance of domesticity). There were secondly, the duties prescribed in the scriptures, viz., those especially called the Dharmasastras. And, thirdly, there were those duties that eminent and revered men of former times have followed though not occurring either in the Vedas or the scriptures.[1927] 'Which of these duties should I follow? Which of them, again, followed by me, are likely to lead to my benefit? Which, indeed, should be my refuge?'--Thoughts like these always troubled him. He could not solve his doubts.