Mahabharata 12.229.1

व्यास उवाच · vyāsa uvāca

अथ ज्ञानप्लवं धीरो गृहीत्वा शान्तिमास्थितःउन्मज्जंश्च निमज्जंश्च ज्ञानमेवाभिसंश्रयेत्

atha jñānaplavaṃ dhīro gṛhītvā śāntimāsthitaḥunmajjaṃśca nimajjaṃśca jñānamevābhisaṃśrayet

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