Mahabharata 13.48.39

भीष्म उवाच · bhīṣma uvāca

योनिसंकलुषे जातं नानाचारसमाहितम्कर्मभिः सज्जनाचीर्णैर्विज्ञेया योनिशुद्धता

yonisaṃkaluṣe jātaṃ nānācārasamāhitamkarmabhiḥ sajjanācīrṇairvijñeyā yoniśuddhatā

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