Mahabharata — Anushasana Parva, Shloka 10
धर्मनिन्दा–धर्मोपासनाफलम् तथा साध्वाचारलक्षणम्
Fruits of Disparaging vs. Observing Dharma; Marks of Good Conduct
वैश्यकर्म च यो विप्रो लोभमोहव्यपाश्रय: । ब्राह्माण्यं दुर्लभं प्राप्प करोत्यल्पमति: सदा
vaiśyakarma ca yo vipro lobhamohavyapāśrayaḥ | brāhmaṇyaṁ durlabhaṁ prāpya karoty alpamatiḥ sadā ||
摩诃提婆说道：“有婆罗门既得难得之婆罗门位，却依附贪欲与迷妄，因常怀狭隘之心而去从事吠舍之业，便堕入吠舍之生。又若吠舍采纳首陀罗之行与其业，亦得首陀罗之位。婆罗门若行首陀罗之事，由此背离自身之法，亦至首陀罗之位。”
श्रीमहेश्वर उवाच
Educational Q&A
The verse warns that abandoning one’s own dharma out of greed and delusion leads to moral and spiritual decline, expressed here as a fall into a lower social condition/birth. It emphasizes integrity of conduct (ācāra) and self-restraint as safeguards of one’s station and responsibilities.
In Anuśāsana Parva, Mahādeva is speaking in a didactic context, laying down norms of conduct and consequences. Here he states that when members of a varṇa adopt the work and behavior of another varṇa due to base motives, they incur degradation, framed as rebirth into that lower status.