Mahabharata 13.49.26

कानीनाध्यूढजौ चापि विज्ञेयौ पुत्रकिल्बिषौतावपि स्वाविव सुतौ संस्कार्याविति निश्चयः

kānīnādhyūḍhajau cāpi vijñeyau putrakilbiṣautāvapi svāviva sutau saṃskāryāviti niścayaḥ

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