Hey kiddo! Tahir is a special word in Islam that means being pure or clean. In fact, it's so important that before Muslims start praying, they have to make sure they are tahir. This means they need to clean their bodies, clothes, and the place where they pray so that they are free of any impurities or dirt. Think of it as taking a bath before going to a fancy party - you want to look and smell nice, right? That's how Muslims feel about being tahir when they pray. It's a way of showing respect to God and making sure they are ready to focus on their prayers.