II Chronicles 17:14 Midrash

וְאֵ֥לֶּה פְקֻדָּתָ֖ם לְבֵ֣ית אֲבוֹתֵיהֶ֑ם לִֽיהוּדָה֙ שָׂרֵ֣י אֲלָפִ֔ים עַדְנָ֣ה הַשָּׂ֔ר וְעִמּוֹ֙ גִּבּ֣וֹרֵי חַ֔יִל שְׁלֹ֥שׁ מֵא֖וֹת אָֽלֶף׃ (ס)

And this was the numbering of them according to their fathers’houses: of Judah, the captains of thousands: Adnah the captain, and with him mighty men of valour three hundred thousand;