General Hinduism
Devāpi and Maru return
(37) Devâpi, the brother of S'ântanu [9.22: 12-17] and Maru [9.12: 5-6] who took birth in the Ikshvâku dynasty, are endowed with great mystical power and both live [even now] in Kalâpa. (38) At the end of the age of Kali they will return to human society and promulgate the varnâs'rama-dharma as it was before, deriving from the instructions they received from Vâsudeva [Krishna]. (39) The four ages of Krita [Satya], Tretâ, Dvâpara and Kali that the living beings undergo in this world, will repeat themselves continuously following this sequential order [see also mahâyuga].