Mahabharata 11.5.12

पनसस्य यथा जातं वृन्तबद्धं महाफलम्स तथा लम्बते तत्र ऊर्ध्वपादो ह्यधःशिराः

panasasya yathā jātaṃ vṛntabaddhaṃ mahāphalamsa tathā lambate tatra ūrdhvapādo hyadhaḥśirāḥ

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