Mahabharata 3.125.4
न ते मिथ्या समारम्भो भवत्वेष परो विधिःजानामि चाहं विप्रर्षे न मिथ्या त्वं करिष्यसि
na te mithyā samārambho bhavatveṣa paro vidhiḥjānāmi cāhaṃ viprarṣe na mithyā tvaṃ kariṣyasi
Our plain-language meaning of this verse is waiting for scholar review.
Open in the book