sex

 Main articles: Islamic hygienical jurisprudence and Junub

Sexual hygiene in Islam is a prominent topic in Islamic jurisprudence (fiqh) due to its everyday nature. Ibn Abidin, a 13th century Hanafi Islamic scholar explains:^[73]

When there is discharge of thick, cloudy white fluid (wady) (that exits before or after urinating) or unlustful discharge of thin, sticky, white fluid (madhy) caused by play or kissing, it requires ghusl. And wudu.

 Junub (جنب) is an Islamic term meaning ritually impure due to sexual intercourse or seminal discharge. A person in such a state needs to take a bath in order to become ritually pure and be able to perform his prayers.^[1] 

 A state of major ritual impurity caused by any contact with semen. The state of janabah renders Muslims unfit for the performance of ritual duties, such as prayer, until they purify themselves through complete ablution (ghusl). From: Janabah in The Oxford Dictionary of Islam »

https://www.youtube.com/watch?v=w4uUvBMrVjc