Mahabharata 1.33.24

अथ वा संस्कृतं भोज्यं दूषयन्तु भुजंगमाःस्वेन मूत्रपुरीषेण सर्वभोज्यविनाशिना

atha vā saṃskṛtaṃ bhojyaṃ dūṣayantu bhujaṃgamāḥsvena mūtrapurīṣeṇa sarvabhojyavināśinā

Our plain-language meaning of this verse is waiting for scholar review.