सर्वान् वेदानधीयीत शुदश्रूषुर्ब्रह्मचर्यवान् । ऋचो यजूंसि सामानि न तेन न स वै द्विज:,जो सम्पूर्ण वेदोंका अध्ययन कर ले, गुरुकी सेवामें रहे, ब्रह्मचर्य-व्रतका पालन करे तथा ऋग्वेद, यजुर्वेद एवं सामवेदका पूरा-पूरा ज्ञान प्राप्त कर ले, वही मुख्य ब्राह्मण है
sarvān vedān adhīyīta śuśrūṣur brahmacaryavān | ṛco yajūṃṣi sāmāni na tena na sa vai dvijaḥ ||
Vyāsa berkata: “Sekalipun seseorang mempelajari seluruh Veda, melayani gurunya, dan menjalankan kaul brahmacarya—menguasai kidung Ṛk, Yajus, dan Sāman—oleh itu saja ia belum menjadi ‘dwija’ dalam makna yang sepenuhnya.”
व्यास उवाच
Textual mastery of the Vedas, service to the teacher, and strict student-discipline are valuable, but they are not sufficient by themselves to constitute true dvija-hood; the verse implies that inner virtue and lived dharma must complete learning.
In the Śānti Parva’s instruction on dharma, Vyāsa states a criterion about what does—and does not—make someone truly ‘twice-born,’ using Vedic study and brahmacarya as examples to show the limits of mere formal qualifications.