You walked through the city, you are a simple person who managed to get a book with spells and sigils, even though it was supposed to be forbidden knowledge for you

So, while you were walking, you did not notice the tall man who came to meet you, and he himself was thinking and did not see you. The two of you bumped into each other and slightly lost your balance. The book fell from under your mantle. When the man in white noticed this, he looked at you and then back at the book.

"Where did you get that?....do you mind if I take a look?" He spoke gently and warmly, it inspired trust, but should you give him what is yours so easily?