The Difference between Maniy, Madhiy and Moisture
Maniy is pure and it is not essential to wash it from your clothes, but you must do Ghusl after it is emitted. Madhiy is impure and must be washed off if it gets onto the body. Madhiy invalidates Wudu' but it does not require Ghusl. Moisture is pure and it need not be washed off, but it invalidates Wudu'.
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