"I grant and accord it," said Don Quixote, "provided without detriment or prejudice to my king, my country, or her who holds the key of my heart and freedom, it may be complied with."
"It will not be to the detriment or prejudice of any of them, my worthy lord," said the afflicted damsel; and here Sancho Panza drew close to his master’s ear and said to him very softly, "Your worship may very safely grant the boon she asks; it’s nothing at all; only to kill a big giant; and she who asks it is the exalted Princess Micomicona, queen of the great kingdom of Micomicon of Ethiopia."
We may therefore believe, without any hesitation, that since, as you say, sir knight, everything in this castle goes and is brought about by means of enchantment, Sancho, I say, may possibly have seen, through this diabolical medium, what he says he saw so much to the detriment of my modesty.
He decreed that no blind man should sing of any miracle in verse, unless he could produce authentic evidence that it was true, for it was his opinion that most of those the blind men sing are trumped up, to the detriment of the true ones.
There are no more uses of "detrimental" in the book.
Show samples from other sources
This may sound like an excuse, and perhaps even a little sad, but it’s hard for others to know how consuming one’s arrival in a new land can be, how it will take up every last resource of spirit, which too often can lead to the detriment of most everything else.
Chang-rae Lee -- A Gesture Life
What’s more, they are detrimental to the revolution, so we must oppose them resolutely."