Mahabharata 13.70.56
इत्युक्तोऽहं धर्मराज्ञा महर्षे; धर्मात्मानं शिरसाभिप्रणम्यअनुज्ञातस्तेन वैवस्वतेन; प्रत्यागमं भगवत्पादमूलम्
ityukto'haṃ dharmarājñā maharṣe; dharmātmānaṃ śirasābhipraṇamyaanujñātastena vaivasvatena; pratyāgamaṃ bhagavatpādamūlam
Our plain-language meaning of this verse is waiting for scholar review.