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SB 4.1.9
priyavratottanapadau
manu-putrau mahaujasau
tat-putra-pautra-naptrnam
anuvrttam tad-antaram
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Svayambhuva Manu’s two sons, Priyavrata and Uttanapada, became very powerful kings, and their sons and grandsons spread all over the three worlds during that period.