Mahabharata 12.277.22

यदा मृतश्च स्वजनं न ज्ञास्यसि कथंचनसुखितं दुःखितं वापि ननु बोद्धव्यमात्मना

yadā mṛtaśca svajanaṃ na jñāsyasi kathaṃcanasukhitaṃ duḥkhitaṃ vāpi nanu boddhavyamātmanā

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