Cakkavattisutta 15.2

15.2

Tesaṃ āyunāpi parihāyamānānaṃ vaṇṇenapi parihāyamānānaṃ cattārīsavassasahassāyukānaṃ manussānaṃ vīsativassasahassāyukā puttā ahesuṃ.

Those people who lived for 40,000 years had children who lived for 20,000 years.