Mahabharata 12.323.50

महत्कार्यं तु कर्तव्यं युष्माभिर्द्विजसत्तमाःइतः कृतयुगेऽतीते विपर्यासं गतेऽपि च

mahatkāryaṃ tu kartavyaṃ yuṣmābhirdvijasattamāḥitaḥ kṛtayuge'tīte viparyāsaṃ gate'pi ca

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