וַיִּֽקַּֽח־ל֣וֹ חֶ֔רֶשׂ לְהִתְגָּרֵ֖ד בּ֑וֹ וְה֖וּא יֹשֵׁ֥ב בְּתוֹךְ־הָאֵֽפֶר׃
And he took him a potsherd to scrape himself therewith; and he sat among the ashes.
Read halakhic rulings (Jewish law) on Job 2:8 from the Mishneh Torah and classical halakhic sources, free online.