Welcome,
Dead Mike!
I would agree with
Foley that Gandalf's staff was probably not taken in the book.
For one thing, I don't think Saruman needed to do that in order to overpower Gandalf; as the head of the Order I believe Gandalf was subject to his power.
Also, in Frodo's apparently retrocognitive dream in the house of Bombadil, Frodo saw:
Quote:
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...a vast tower but not made by hands. On its top stood the figure of a man....the figure lifted his arms and a light flashed from the staff that he wielded.
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FOTR In the House of Tom Bombadil
That isn't definitive, but I think it doubtful the detail about the staff would have been written as seen by Frodo if it hadn't been true.