Shloka 12
Adhyāya 189: Japa—Inquiry into the Jāpaka, Method
Vidhi), and Fruit (Phala
गोभ्यो वृत्ति समास्थाय पीता: कृष्युपजीविन: । स्वधर्मान् नानुतिष्ठन्ति ते द्विजा वैश्यतां गता:
gobhyo vṛttiṃ samāsthāya pītāḥ kṛṣyupajīvinaḥ | svadharmān nānutiṣṭhanti te dvijā vaiśyatāṃ gatāḥ ||
婆罗堕阇说道：凡二次生者以畜牧与农耕为生——以致面色转为苍白——又不再奉行自身所规定的婆罗门之法者，那些婆罗门确已转而具足吠舍之境。
भरद्वाज उवाच
Educational Q&A
The verse teaches that varṇa-identity is tied to the performance of one’s prescribed dharma and customary livelihood: when a Brahmin abandons Brahminical duties and lives by cattle-rearing and agriculture, he is described as having entered the condition of a Vaiśya.
Bharadvāja is explaining a principle of social-ethical classification within the Śānti Parva’s discussions: he cites how certain twice-born, by adopting pastoral/agricultural livelihood and neglecting their own dharma, came to be regarded as Vaiśyas.