Mahabharata 13.129.44

पितृलोकसमीपस्थास्त उञ्छन्ति यथाविधिसंप्रक्षालाश्मकुट्टाश्च दन्तोलूखलिनस्तथा

pitṛlokasamīpasthāsta uñchanti yathāvidhisaṃprakṣālāśmakuṭṭāśca dantolūkhalinastathā

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