Mahabharata 15.10.14

स्वरन्ध्रं पररन्ध्रं च स्वेषु चैव परेषु चउपलक्षयितव्यं ते नित्यमेव युधिष्ठिर

svarandhraṃ pararandhraṃ ca sveṣu caiva pareṣu caupalakṣayitavyaṃ te nityameva yudhiṣṭhira

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