I can’t find any evidence of a 2021 edition of “In God’s Path” being published. The book was originally published in 2015, and there doesn’t appear to be any subsequent editions. Which means that what you found is almost certainly a hijacked textbook. Some fascist piece of shit is passing off their own fascist rhetoric as academic text. Since it looks like your prof is in the clear for not actually teaching a course on Islamic history with disgustingly Islamophobic text, I would encourage you to tell them about this. It’s fairly likely that you’re not the only student who downloaded this load of chauvinist lies thinking it is the real text they’re meant to study, but other students might not be so aware of how blatantly false (and fascist) it is. If your instructor is actually cool, then this could end up being a good opportunity for a teaching moment even.