וְכָל־עַבְדֵ֨י הַמֶּ֜לֶךְ אֲשֶׁר־בְּשַׁ֣עַר הַמֶּ֗לֶךְ כֹּרְעִ֤ים וּמִֽשְׁתַּחֲוִים֙ לְהָמָ֔ן כִּי־כֵ֖ן צִוָּה־ל֣וֹ הַמֶּ֑לֶךְ וּמָ֨רְדֳּכַ֔י לֹ֥א יִכְרַ֖ע וְלֹ֥א יִֽשְׁתַּחֲוֶֽה׃
And all the king’s servants, that were in the king’s gate, bowed down, and prostrated themselves before Haman; for the king had so commanded concerning him. But Mordecai bowed not down, nor prostrated himself before him.
Read halakhic rulings (Jewish law) on Esther 3:2: and classical halakhic sources.