Mahabharata 14.56.10

सत्यं ते प्रतिजानामि नात्र मिथ्यास्ति किंचनअनृतं नोक्तपूर्वं मे स्वैरेष्वपि कुतोऽन्यथा

satyaṃ te pratijānāmi nātra mithyāsti kiṃcanaanṛtaṃ noktapūrvaṃ me svaireṣvapi kuto'nyathā

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