I had seen written that Mordechai left the king's palace (Esther 8:15) wearing teffilin. Can someone help me locate this source?
In this Shiur, https://alldaf.org/p/116885 he mentions in the beginning about the Gra and Chasam Sofer mentioning either that Mordechai couldn't have been wearing teffilin or that he was wearing teffilin when he left the palace. Can someone help me find the sources in the Gra and Chasam Sofer?