''This is a sub-article of Sexuality in Islam and Islamic cleanliness.
Islamic sexual hygienical jurisprudence is a prominent topic in Islamic jurisprudence, due to its relevance to the issues prominent in everyday life.
Regarding things that necessitates Ghusl:
In Islamic medicine, Muhammad is said to have understood the contagious nature of sexually transmitted disease in the 7th century, according to hadiths attributed to him.
In The Canon of Medicine (1025), Avicenna discovered the contagious nature of infectious diseases and fully understood the contagious nature of sexually transmitted disease.
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