Mahabharata 3.32.21

शिष्टैराचरितं धर्मं कृष्णे मा स्मातिशङ्किथाःपुराणमृषिभिः प्रोक्तं सर्वज्ञैः सर्वदर्शिभिः

śiṣṭairācaritaṃ dharmaṃ kṛṣṇe mā smātiśaṅkithāḥpurāṇamṛṣibhiḥ proktaṃ sarvajñaiḥ sarvadarśibhiḥ

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