Mahabharata 13.26.40

मुञ्जपृष्ठं गयां चैव निरृतिं देवपर्वतम्तृतीयां क्रौञ्चपादीं च ब्रह्महत्या विशुध्यति

muñjapṛṣṭhaṃ gayāṃ caiva nirṛtiṃ devaparvatamtṛtīyāṃ krauñcapādīṃ ca brahmahatyā viśudhyati

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