Skandapurana 5.279.268

5.279.268

272 āyuḥpramāṇavarṇane nimeṣādārabhya kṛtādicaturyugakālapramāṇavarṇanam, agniṣṭomādi-karmabhirdevalokabrahmalokādiprāptivarṇanam, caturyugepu lokānāṃ paristhitidharmādi-vartanavarṇanam, tatprasaṃgena viśeṣataḥ kalikālanirṇayakaraṇam ...315 1

272 In the description of the measure of lifespan: description of the duration of time from a twinkling of an eye up to the four ages beginning with Kṛta; description of the attainment of the world of the gods, the world of Brahmā, and the rest through rites such as the Agniṣṭoma; description of the conditions, duties, and conduct of people in the four ages; in connection with that, specifically, the determination of the Kali age... 315 1