And the Grey Messenger took the ring, and kept it ever secret; yet the White Messenger (who was skilled to uncover all secrets) after a time became aware of this gift, and bregrudged it, and this was the beginning of the hidden ill-will that he bore to the Grey, which afterwards became manifest."
So, if the very reason Saruman hated Gandalf in the first place was that he knew Gandalf had received Narya, why didn't he take it from him when he had him in Orthanc? I really doubt it was because he "forgot" about it. Any ideas? Maybe the ring clouded Saruman's mind?


