Jeremiah 38:6

So they took Jeremiah and dropped him into the cistern of Malchiah, the king’s son, which was in the courtyard of the guard. They lowered Jeremiah with ropes into the cistern, which had no water but only mud, and Jeremiah sank down into the mud.
BSB · Berean Standard Bible
Then took they Jeremiah, and cast him into the dungeon of Malchiah the son of Hammelech, that was in the court of the prison: and they let down Jeremiah with cords. And in the dungeon there was no water, but mire: so Jeremiah sunk in the mire.

Note of Hammelech: or, of the king

KJV · King James Version
Then they took Jeremiah and threw him into the dungeon of Malchijah the king’s son, that was in the court of the guard. They let down Jeremiah with cords. In the dungeon there was no water, but mire; and Jeremiah sank in the mire.
WEB · World English Bible
Then took they Jeremiah, and cast him into the dungeon of Malchijah the king’s son, that was in the court of the guard: and they let down Jeremiah with cords. And in the dungeon there was no water, but mire; and Jeremiah sank in the mire.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

took
Jeremiah 37:21; Psalm 109:5; Luke 3:19, 20
into
Jeremiah 37:16; Lamentations 3:55; Acts 16:24; 2 Corinthians 4:8, 9; Hebrews 10:36
Hammelech
or, the king.
Jeremiah 36:26
and they
Jeremiah 38:11, 12
And in
This dungeon, which seems to have belonged to one of Zedekiah's sons, appears to have been a most dreadful place; the horrors of which were probably augmented by the cruelty of the jailor. "The eastern people," observes Sir J. Chardin, "have not different prisons for the different classes of criminals; the judges do not trouble themselves about where the prisoners are confined, or how they are treated, considering it merely as a place of safety; and all that they require of the jailor is, that the prisoner be forthcoming when called for. As to the rest, he is master to do as he pleases; to treat him well or ill; to put him in irons or not; to shut him up close, or hold him in easier restraint; to admit people to him, or to suffer nobody to see him. If the jailor and his servants have large fees, let the person be the greatest rascal in the world, he shall be lodged in the jailor's own apartment, and the best part of it; and on the contrary, if those that have imprisoned a man give the jailor greater presents, or that he has a greater regard for them, he will treat the prisoner with the greatest inhumanity." This adds a double energy to those passages which speak of "the sighing of the prisoner," and to Jeremiah's supplicating that he might not be remanded to the dungeon of Jonathan. (ver. 26; ch. 37:20.)
Jeremiah 38:22; Genesis 37:24; Psalm 40:2; Psalm 69:2, 14, 15; Lamentations 3:52–55; Zechariah 9:11