Mahabharata 12.159.41

ब्राह्मणायावगूर्येह स्पृष्ट्वा गुरुतरं भवेत्वर्षाणां हि शतं पापः प्रतिष्ठां नाधिगच्छति

brāhmaṇāyāvagūryeha spṛṣṭvā gurutaraṃ bhavetvarṣāṇāṃ hi śataṃ pāpaḥ pratiṣṭhāṃ nādhigacchati

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