Mahabharata 4.23.6

तेषां तद्वचनं श्रुत्वा विराटो वाहिनीपतिःअब्रवीत्क्रियतामेषां सूतानां परमक्रिया

teṣāṃ tadvacanaṃ śrutvā virāṭo vāhinīpatiḥabravītkriyatāmeṣāṃ sūtānāṃ paramakriyā

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