 Taharah (ritual purity) involves performing wudu (ablution) for the five daily salah (prayers), as well as regularly performing ghusl (bathing), which led to bathhouses being built across the Islamic world.Islamic toilet hygiene also requires washing with water after using the toilet, for purity and to minimize germs.In the Abbasid Caliphate (8th-13th centuries), its capital city of Baghdad (Iraq) had 65,000 baths, along with a sewer system.