Midrasch zu Bereschit 41:14

“The Song of Songs that is Solomon’s” (Song of Songs 1:1).
Prologue of the Sages. “The Song of Songs,” that is what [the verse] written by Solomon states: “Have you seen a man diligent in his labor? He will stand before kings, he will not stand before dark ones” (Proverbs 22:29). “Have you seen a man diligent in his labor” – This is Joseph, in whose regard it is written: “He came into the house to perform his labor [and none of the men of the house were there, in the house]” (Genesis 39:11). Rabbi Yehuda and Rabbi Neḥemya, Rabbi Yehuda says: It was a day of disgrace and manure,¹The midrash is referring here to Egyptian ritual worship, and uses these words to describe it in order to demean such idolatry. and a day of theater. Rabbi Neḥemya says it was a day of theater in honor of the Nile. Everyone went to see, and he entered to perform his labor to calculate the accounts of his master.
Rabbi Pinḥas says in the name of Rabbi Shmuel bar Abba: Anyone who serves his master properly is set free. From where do we derive this? From Joseph. Because he served his master properly, he was set free. Therefore, “he will stand before kings,” this is Pharaoh, as it is stated: “Pharaoh sent and summoned Joseph, and they rushed him from the dungeon” (Genesis 41:14). “He will not stand before dark ones,” this is Potiphar, as the Holy One blessed be He blinded his eyes and castrated him.

And when the king heard the words of the chief butler the king gave orders that the wise men ‎of Egypt be not slain. And the king commanded further unto his servants to bring Joseph ‎before him, and he said unto them: Go ye unto him, but do not frighten him lest he be ‎confused and unable to speak correctly. And the servants of the king went unto Joseph and ‎they took him hastily from the dungeon, and they shaved him and changed his prison ‎garments, and he came before the king. And the king was seated upon his throne in his royal ‎garments, girt with the golden Ephod, and the ornaments that were upon him sparkled, and ‎the carbuncle and the ruby and the emerald flashed, and all the precious stones that were ‎upon the head of the king were blazing, and Joseph was greatly astonished at the sight of the ‎king. And the throne upon which the king sat was covered with gold and with silver and with ‎onyx stones, and there were to it seventy steps. And it was the rule in all the land of Egypt, ‎when a man came to speak unto the king, and if he was a prince or one highly esteemed by ‎the king, that he ascended toward the king up to the thirty-first step, and the king would ‎descend to the thirty sixth step and speak unto him. And if he was of the common people, he ‎ascended to the third step, and the king descended to the fourth and spoke unto him. And it ‎was further their rule that every man who understood to speak the seventy languages, he ‎would scale the seventy steps, and while ascending he would speak until he reached the king. ‎And any man that knew not all the seventy languages was permitted to ascend the steps ‎according to the number of his languages. And it was a law in Egypt, in those days, that no man ‎could be king over them unless he knew the seventy languages. And when Joseph appeared ‎before the king he bowed down before him to the ground, and he ascended three steps, and ‎the king sat down on the fourth and he spoke unto Joseph saying: I have dreamed a dream ‎and no one can interpret it correctly. And I commanded to-day all the magicians of Egypt and ‎all the wise men came before me, and I told my dream unto them, but there was none among ‎them to interpret it correctly. And now I have heard of thee this day that thou art a wise man, ‎know ing to interpret correctly every dream. And Joseph answered Pharaoh saying: Let the ‎king relate his dream which he hath dreamed, for verily his interpretation is with God. And ‎Pharaoh related his dream unto Joseph concerning the cows and concerning the ears. And ‎when the king ceased speaking, ‎

Everything fortunate that occurred to Joseph likewise happened to Zion. It is written of Joseph: And Joseph was of beautiful form and fair to look upon (Gen. 39:6), and of Zion it is stated: Fair in situation, the joy of the whole earth (Ps. 48:3). Concerning Joseph it is written: He is not greater in this house than I (Gen. 39:9), and of Zion: The glory of this latter house shall be greater than that of the former (Hag. 2:9). Joseph: The Lord was with him (Gen. 39:2), Zion: And My eyes and My heart shall be there (II Chron. 7:15). Joseph: And showed kindness unto him (Gen. 39:21), Zion: I remember for thee the affection of thy youth (Jer. 2:2). Joseph: And he shaved himself and changed his raiment (Gen. 41:14), Zion: And the Lord shall have washed away (Isa. 44:4). Joseph: Only in the throne will I be greater than thou (Gen. 41:40), Zion: At that time they shall call Jerusalem the throne of the Lord (Jer. 3:17). Joseph: And arrayed him in vestures of fine linen (Gen. 41:42), Zion: Awake, awake, put on thy strength, O Zion; put on thy beautiful garments (Isa. 52:1). Joseph: He sent Judah before him (Gen. 46:29), Zion: Behold, I send My messenger (Mal. 3:1).