Daniel 6:13
“Then answered they and said before the king, That Daniel, which is of the children of the captivity of Judah, regardeth not thee, O king, nor the decree that thou hast signed, but maketh his petition three times a day.”
Then these men assembled, and found Daniel praying and making supplication before his God.
Then they came near, and spake before the king concerning the king’s decree; Hast thou not signed a decree, that every man that shall ask a petition of any God or man within thirty days, save of thee, O king, shall be cast into the den of lions? The king answered and said, The thing is true, according to the law of the Medes and Persians, which altereth not.
Then answered they and said before the king, That Daniel, which is of the children of the captivity of Judah, regardeth not thee, O king, nor the decree that thou hast signed, but maketh his petition three times a day.
Then the king, when he heard these words, was sore displeased with himself, and set his heart on Daniel to deliver him: and he laboured till the going down of the sun to deliver him.
Then these men assembled unto the king, and said unto the king, Know, O king, that the law of the Medes and Persians is, That no decree nor statute which the king establisheth may be changed.
Counter-Arguments
The strongest case that this verse does not belong in this theme.

Cross-References
“There are certain Jews whom thou hast set over the affairs of the province of Babylon, Shadrach, Meshach, and Abed–nego; these men, O king, have not regarded thee: they serve not thy gods, nor worship the golden image which thou hast set up.”
“Then was Daniel brought in before the king. And the king spake and said unto Daniel, Art thou that Daniel, which art of the children of the captivity of Judah, whom the king my father brought out of Jewry?”
“Evening, and morning, and at noon, will I pray, and cry aloud: and he shall hear my voice.”
“And go, get thee to them of the captivity, unto the children of thy people, and speak unto them, and tell them, Thus saith the Lord God; whether they will hear, or whether they will forbear.”
“Then Arioch brought in Daniel before the king in haste, and said thus unto him, I have found a man of the captives of Judah, that will make known unto the king the interpretation.”