Genesis 5:8 Halakhah

וַיִּֽהְיוּ֙ כָּל־יְמֵי־שֵׁ֔ת שְׁתֵּ֤ים עֶשְׂרֵה֙ שָׁנָ֔ה וּתְשַׁ֥ע מֵא֖וֹת שָׁנָ֑ה וַיָּמֹֽת׃ (ס)

And all the days of Seth were nine hundred and twelve years; and he died.

Read halakhic rulings (Jewish law) on Genesis 5:8: and classical halakhic sources.