When Mahārāja Yudhiṣṭhira asked Nārada Muni about these matters, Nārada Muni stopped giving his own statements and quoted statements by Lord Nārāyaṇa, for He is the supreme authority for giving religious codes (dharmaṁ tu sākṣād bhagavat-praṇītam (SB 6.3.19)). Every human being is expected to acquire thirty qualities, such as truthfulness, mercy and austerity. The process of following the priniples of religion is known as sanātana-dharma, the eternal religious system.
The varṇāśrama system delineates the divisions of brāhmaṇa, kṣatriya, vaiśya and śūdra. It also sets forth the system of saṁskāras. The garbhādhāna saṁskāra, the ceremony for begetting a child, must be observed by the higher section of people, namely the dvijas. One who follows the garbhādhāna saṁskāra system is actually twice-born, but those who do not, who deviate from the principles of varṇāśrama-dharma, are called dvija-bandhus.