Mahabharata 12.203.16

अथ यद्यद्यदा भावि कालयोगाद्युगादिषुतत्तदुत्पद्यते ज्ञानं लोकयात्राविधानजम्

atha yadyadyadā bhāvi kālayogādyugādiṣutattadutpadyate jñānaṃ lokayātrāvidhānajam

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