Mahabharata 3.186.22

क्षीणे कलियुगे चैव प्रवर्तति कृतं युगम्एषा द्वादशसाहस्री युगाख्या परिकीर्तिता

kṣīṇe kaliyuge caiva pravartati kṛtaṃ yugameṣā dvādaśasāhasrī yugākhyā parikīrtitā

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