Midrash su Ester 6:10

“The king said to Haman: Hurry, take the garments and the horse; as you have said, do so to Mordekhai the Jew who sits at the king’s gate. Do not omit anything that you spoke of. Haman took the garments and the horse, dressed Mordekhai and led him, riding, through the city square and proclaimed before him: ‘So shall be done for anyone the king wishes to honor!’” (Esther 6:10-11).
“Take the garments and the horse… Haman took the garments and the horse.” He went to Mordekhai. When he [Mordekhai] was told that he was coming, he was very afraid, and he was sitting with his students before him. He said to his students: ‘My children, run and remove yourselves from here that you are not burned with my coal, as the wicked Haman is coming to kill me.’ They said: ‘If you die, we will die with you.’ He said to them: ‘If so, let us stand in prayer and pass away while praying.’ They completed their prayers and sat and engaged in the halakhot of Sefirat ha-Omer,⁵ The commandment to count the days between Passover and Shavuot. When the Temple stood, they would bring a meal offering of barley measuring one omer (the omer offering) on the 16th of Nisan, the second day of Passover. as that day was the 16th of Nisan and on that day they would bring the omer offering at the time when the Temple stood. Haman came to them and said to them: ‘What are you engaged in?’ They said to him: ‘In the commandment of the omer. That is what it says: “And if you present an offering of the first fruits to the Lord…”’ (Leviticus 2:14). There⁶For the residents of the Land of Israel, “there” refers to Babylonia, and vice versa. In the Babylonian Talmud (Megilla 16a) it is stated that Mordekhai was demonstrating to his students how to take a handful of a meal offering (Etz Yosef). they say: They showed him the halakhot of taking a handful [of a meal offering]. And [these interpretations] are one and the same, as they would take a handful from the omer. He said to them: ‘This omer, what is it? Is it [made] of gold or of silver?’ They said to him: ‘Not of gold and not of silver and not of wheat, but of barley.’ He said to them: ‘What is its value? Is it ten kantrin?’⁷Kantrin, or singular Kantar, is a measurement of silver equivalent to one talent, ~33 kg. They said to him: ‘It goes for ten manin.’⁸Manin, or singular maneh, in this context is equivalent to the small silver coin known as a ma’a. He said to them: ‘Rise, for your ten manin have vanquished my ten thousand kantrin of silver.’
Once [Mordekhai] had finished praying, Haman said to Mordekhai: ‘Put on these royal garments.’ He said to him: ‘Why are you dishonoring the monarchy? Is there any man who would put on royal garments without bathing?’ He [Haman] went and sought a bath attendant and could not find one. What did he do? He girded his loins and went in and bathed him. When he came out, he said to him: ‘Take this crown.’ He [Mordekhai] said to him: ‘Why are you dishonoring the monarchy? Is there any man who would put on a royal crown without a haircut?’
He [Haman] went and sought a barber and did not find one. What did he do? He went to his house and brought scissors and sat and gave him a haircut. He began to sigh. He [Mordekhai] said to him: ‘Why are you sighing?’ He said to him: ‘Woe to this man’s⁹ Referring to oneself in the first person was considered bad luck. “This man” in this context is Haman, referring to himself. father – he [Haman] has been removed from being a high official and an overlord and has been made a bath attendant and a barber!’ He [Mordekhai] said to him: ‘That is why I asked you. Do I not know that the father of that man [Haman] was a bath attendant and a barber in Kefar Karyanus and you have found his barber tools?’ He [Haman] said to him: ‘Arise and ride this horse.’ He said to him: ‘I have not the strength [to mount it], for I am old.’ He said to him: ‘Am I not an old man?’ He said to him: ‘Was it not you who brought it on yourself?’ He said to him: ‘Get up, for I will bend my back for support and you step on me and get up and ride, to fulfill for you that which Scripture says: “And you shall tread on their high places” (Deut. 33:29).

"On that night the king's sleep fled" (Esth. 6:1). That night the throne of the King who is King of kings, the Holy One, blessed be He, became unsteady, because He saw that Israel was in great distress. The sleep of the king on earth fled, for he had seen in his dream Haman taking the sword to slay him; || and he became agitated and arose from his sleep, and he told the sons of Haman, the scribes, to read in the books so as to see what had happened to him. They opened the books, and found the incident which Mordecai had told, but they did not wish to read this, and they rolled up the scrolls. The king said to them: Read ye what is written before you. But they were unwilling to read, and the writing was read (of its own account) by itself, as it is said, "And they were read before the king" (ibid.). It is not written here, "They were reading," but "They were read." The king spake to his servants: Call ye Haman to me. They said to him: Behold, he is standing outside. The king said: The thing is true which I saw in my dream; he has come only in this hour to slay me. He said: Let him come in. He entered before the king. The king said to him: I wish to exalt and aggrandize a certain man; what shall be done to him? Haman said in his heart, for the seed of Esau speak in their hearts, but never reveal their secret with their mouths, as it is said, "And Haman said in his heart" (Esth. 6:6). Haman said in his heart: He does not desire to exalt any other man except me. I will speak words so that I shall be a king just as he is. He said to him: Let them bring the apparel || which the king wore on the day of the coronation, and (let them bring) the horse upon which the king rode on the coronation day, and the crown which was put upon the head of the king on the day of coronation. The king was exceedingly angry because of the crown. The king said: It does not suffice this villain, but he must even desire the crown which is upon my head. Haman saw that the king was angry because of the crown; he said: "And let the apparel and the horse be delivered to the hand of one of the king's most noble princes" (Esth. 6:9). (The king) said to him: Go, and do thus to Mordecai. As soon as Haman heard this he became greatly agitated, and he said to him: My lord, O king! There are very many named Mordecai. The king answered: "The Jew." (Haman) said to him: There are very many Jews. The king said to him: "He who sits at the king's gate" (Esth. 6:10).