Mahabharata 12.88.19

न कर्म कुरुते वत्सो भृशं दुग्धो युधिष्ठिरराष्ट्रमप्यतिदुग्धं हि न कर्म कुरुते महत्

na karma kurute vatso bhṛśaṃ dugdho yudhiṣṭhirarāṣṭramapyatidugdhaṃ hi na karma kurute mahat

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