וְלָקַחְתָּ֤ פַךְ־הַשֶּׁ֙מֶן֙ וְיָצַקְתָּ֣ עַל־רֹאשׁ֔וֹ וְאָֽמַרְתָּ֙ כֹּֽה־אָמַ֣ר יְהוָ֔ה מְשַׁחְתִּ֥יךָֽ לְמֶ֖לֶךְ אֶל־יִשְׂרָאֵ֑ל וּפָתַחְתָּ֥ הַדֶּ֛לֶת וְנַ֖סְתָּה וְלֹ֥א תְחַכֶּֽה׃
Then take the vial of oil, and pour it on his head, and say: Thus saith the LORD: I have anointed thee king over Israel. Then open the door, and flee, and tarry not.’
Read halakhic rulings (Jewish law) on II Kings 9:3: and classical halakhic sources.