Comentario citado sobre Génesis 5:15

AND UNTO THEM WERE SONS BORN AFTER THE FLOOD. The intent thereof is to imply that even though they were fit to have children before the flood — for in those generations it was normal to beget children at about sixty years of age²⁵⁹See above, 5:15, 21. — these did not beget children even at the age of a hundred, only until after the flood, for G-d restrained them from having children in order that they should not perish in the flood or that it [not] be necessary to save many persons in the ark. And so also did G-d do to this entire family: Lamech was delayed in begetting Noah until more than twice the age of his ancestors,²⁶⁰Enoch begot Methuselah at the age of sixty-five (above, 5:21), and Lamech begot Noah at the age of 182 (ibid., Verse 28). Noah begot his sons when he was five hundred years old (ibid., Verse 32). and Noah much more. This is already mentioned in the commentary of Rashi²⁶¹Above, 5:32. who quotes from Bereshith Rabbah.²⁶²26:2.

ואחר נפוצו AND AFTERWARDS WERE SPREAD ABROAD — From these many families were spread abroad (besides those already mentioned. 5:15—18).