Mahabharata 13.124.12

असद्वा हसितं किंचिदहितं वापि कर्मणारहस्यमरहस्यं वा न प्रवर्तामि सर्वथा

asadvā hasitaṃ kiṃcidahitaṃ vāpi karmaṇārahasyamarahasyaṃ vā na pravartāmi sarvathā

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