Matsya Purana 50.70

50.70

yeṣu vai sthāsyate kṣatraṃ utpatsyante nṛpāścaye.
teṣāmāyuḥ pramāṇañca nāmataścaiva tānnṛpān.. 50.69 ..

The Ṛiṣis said :—Sûta ! all this is past history now. We wish to hear something about the future kings. Pray tell us about the kings who will

be the rulers of the land. Be pleased to tell us their names and duration of their reigns; please also tell us the extent of Satya, Tretâ, Dvâpara and Kaliyugas, and also explain to us about the prosperity, adversity and vices of those ages.”—68-71.