"Giving a clue" phrase

One of the more usual forms is "Give a clue to something" or "Give a clue as to something"

The Merriam Webster Dictionary gives these examples under the "More Example Sentences" button of the above definition:

The book gives the reader plenty of clues to solve the mystery

It gives a clue as to how to proceed

The first clue to how the clocks actually work came across the Atlantic in 1971

You also get sentences like "This gives you a clue to solving the problem", "We found a clue to the mystery", "The postcard is from Nice, that gives us a clue as to his location" and so on.