Mahabharata 3.178.42

ततो मे विस्मयो जातस्तद्दृष्ट्वा तपसो बलम्ब्रह्म च ब्राह्मणत्वं च येन त्वाहमचूचुदम्

tato me vismayo jātastaddṛṣṭvā tapaso balambrahma ca brāhmaṇatvaṃ ca yena tvāhamacūcudam

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