וּבַשָּׁנָה֩ הָאַחַ֨ת עֶשְׂרֵ֜ה בְּיֶ֣רַח בּ֗וּל ה֚וּא הַחֹ֣דֶשׁ הַשְּׁמִינִ֔י כָּלָ֣ה הַבַּ֔יִת לְכָל־דְּבָרָ֖יו וּלְכָל־משפטו [מִשְׁפָּטָ֑יו] וַיִּבְנֵ֖הוּ שֶׁ֥בַע שָׁנִֽים׃
Und im elften Jahre, im Monate Bul, das ist der achte Monat, war das Haus fertig in all seinen Stücken und nach all seinen Vorschriften: also baute er daran sieben Jahre.
Rashi
In the month of Bul. This is [the month of] Mar Cheshvan;49The Flood [מבול] during Noach’s time began in the month of Marcheshvan. [when] the grass in the field decays, and cattle is given fodder from what is stored, from the expression “and he gave fodder [ויבל] to the donkeys.”50Shoftim 19:21.