Mahabharata 12.143.5

सोऽहं त्यक्ष्ये प्रियान्प्राणान्पुत्रदारं विसृज्य चउपदिष्टो हि मे धर्मः कपोतेनातिधर्मिणा

so'haṃ tyakṣye priyānprāṇānputradāraṃ visṛjya caupadiṣṭo hi me dharmaḥ kapotenātidharmiṇā

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