Mahabharata 12.330.34

पञ्चकल्पमथर्वाणं कृत्याभिः परिबृंहितम्कल्पयन्ति हि मां विप्रा अथर्वाणविदस्तथा

pañcakalpamatharvāṇaṃ kṛtyābhiḥ paribṛṃhitamkalpayanti hi māṃ viprā atharvāṇavidastathā

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