Parallel
Daniel 6:18
Brenton's English Septuagint · Berean Standard Bible
And they brought a stone, and put it on the mouth of the den; and the king sealed [it] with his ring, and with the ring of his nobles; that the case might not be altered with regard to Daniel.
Then the king went to his palace and spent the night fasting. No entertainment was brought before him, and sleep fled from him.