I just Googled it, apparently it’s considered a misinterpretation of their holy book. They apparently have one verse that recommends washing 7 times after touching a dog, but Muslims on Reddit theorize that they meant farm dogs that are rarely cleaned, if ever. But apparently some of the stories in their holy book mention people having dogs and whatever. Idk it may vary from sect to sect. Andrew Tate is Muslim and he has a pit bull, so idk