Mahabharata 15.33.10

वैशंपायन उवाच · vaiśaṃpāyana uvāca

इत्येवंवादिनं तं स न्यायवित्प्रत्यभाषतकुशलप्रश्नसंयुक्तं कुशलो वाक्यकर्मणि

ityevaṃvādinaṃ taṃ sa nyāyavitpratyabhāṣatakuśalapraśnasaṃyuktaṃ kuśalo vākyakarmaṇi

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