וּֽבְאַהֲרֹ֗ן הִתְאַנַּ֧ף יְהוָ֛ה מְאֹ֖ד לְהַשְׁמִיד֑וֹ וָֽאֶתְפַּלֵּ֛ל גַּם־בְּעַ֥ד אַהֲרֹ֖ן בָּעֵ֥ת הַהִֽוא
Moreover the LORD was very angry with Aaron to have destroyed him; and I prayed for Aaron also the same time.
Read halakhic rulings (Jewish law) on Deuteronomy 9:20: and classical halakhic sources.