Mahabharata 1.149.5
न त्वेतदकुलीनासु नाधर्मिष्ठासु विद्यतेयद्ब्राह्मणार्थे विसृजेदात्मानमपि चात्मजम्
na tvetadakulīnāsu nādharmiṣṭhāsu vidyateyadbrāhmaṇārthe visṛjedātmānamapi cātmajam
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book