וְהַמַּ֗יִם הָיוּ֙ הָל֣וֹךְ וְחָס֔וֹר עַ֖ד הַחֹ֣דֶשׁ הָֽעֲשִׂירִ֑י בָּֽעֲשִׂירִי֙ בְּאֶחָ֣ד לַחֹ֔דֶשׁ נִרְא֖וּ רָאשֵׁ֥י הֶֽהָרִֽים׃
And the waters decreased continually until the tenth month; in the tenth month, on the first day of the month, were the tops of the mountains seen.
Read halakhic rulings (Jewish law) on Genesis 8:5: and classical halakhic sources.