וַיְהִי֩ ה֨וּא מִֽשְׁתַּחֲוֶ֜ה בֵּ֣ית ׀ נִסְרֹ֣ךְ אֱלֹהָ֗יו וְֽאַדְרַמֶּ֨לֶךְ וְשַׂרְאֶ֤צֶר [בָּנָיו֙] הִכֻּ֣הוּ בַחֶ֔רֶב וְהֵ֥מָּה נִמְלְט֖וּ אֶ֣רֶץ אֲרָרָ֑ט וַיִּמְלֹ֛ךְ אֵֽסַר־חַדֹּ֥ן בְּנ֖וֹ תַּחְתָּֽיו׃ (פ)
And it came to pass, as he was worshipping in the house of Nisroch his god, that Adrammelech and Sarezer his sons smote him with the sword; and they escaped into the land of Ararat. And Esarhaddon his son reigned in his stead.
Read halakhic rulings (Jewish law) on II Kings 19:37: and classical halakhic sources.