Brahmapurana 1.8

Brahmapurāṇa 1.8

brāhmaṇaiḥ kṣatriyair vaiśyaiḥ śūdraiś cānyaiś ca jātibhiḥ
vānaprasthair gṛhasthaiś ca yatibhir brahmacāribhiḥ //