For the source text click/tap here: Pesachim 67
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The Gemara discusses three level of tuma– of ritual defilement:
• Tumat met – someone whose ritual defilement stems from contact with a dead body
• Tumat zav – someone suffering from a venereal disease.
• Tumat tzora’at – someone who is a metzora (commonly translated as leprosy).
This sugya leads us to discuss the fact that many religious Jews do not visit Har HaBayit (the Temple Mount) today. This is because we are all presumed to be in a state of tumat met (ritual impurity due to “contact” with the dead), and a tamei met is prohibited from ascending Har HaBayit.