Narada Purana — Purva Bhaga, Shloka 8
Varṇāśrama-ācāra: Common Virtues, Varṇa Duties, and the Four Āśramas
ब्राह्मणाः क्षत्रिया वैश्या द्विजाः प्रोक्तास्त्रयस्तथा । मातृतश्चोपनयनाद्दिजत्वं प्राप्यते त्रिभिः ॥ ८ ॥
brāhmaṇāḥ kṣatriyā vaiśyā dvijāḥ proktāstrayastathā | mātṛtaścopanayanāddijatvaṃ prāpyate tribhiḥ || 8 ||
ブラーフマナ、クシャトリヤ、ヴァイシャ――この三者は「ドヴィジャ（再生・二度生まれ）」と説かれる。この三者は、母系に関わる定めに従い、ウパナヤナ（聖なる入門・授戒）の儀によってドヴィジャの位を得る。
Sanatkumara (teaching Narada)
Vrata: none
Primary Rasa: shanta
Secondary Rasa: none
FAQs
It defines who is eligible for the dharmic discipline of Vedic study and ritual life: the ‘second birth’ is not merely social, but a samskara-based entry into responsibility—study, restraint, and prescribed duties.
By establishing upanayana as a gateway to Vedic adhikara (eligibility), it supports the disciplined life that traditionally culminates in devotion—regular worship, mantra-japa, and dharma performed as an offering to the Divine.
It points to samskara-vidhi (ritual procedure) and eligibility rules, which rely on Kalpa (ritual manuals) and Vyākaraṇa/Nirukta for correct mantra usage and meaning during upanayana and subsequent rites.