Another angle: the user might not have the money to buy the book and is looking for free resources. In that case, I should mention that while I can't help with that, there are free resources available from legitimate sources or libraries.
Also, consider formatting the text as a sample download message. They might be creating a notice or a post about it. So the message should include a disclaimer about respecting copyrights, maybe suggest checking online retailers, and provide a sample download text that's ethical. Another angle: the user might not have the
Maybe the user is creating a post on a forum or a study group and wants a helpful message to accompany the link. The sample should be polite, informative, and legally compliant. maybe suggest checking online retailers