The fourth pillar of Islam is Salm. And I think I mispronounced that. But that means fasting, which occurs in the month of Ramadan. So for a whole month, from the time the sun comes up to the sign the sun goes down, you have to make sure that you don't eat. So that's a fasting, kind of an obedience to God. You're submitting to the will. You're showing God how much you're willing to go through so you can make him happy.