Positive Mitzvah 104: Impurity of a "Zav"
Leviticus 15:2 "When any man has a running discharge of his flesh..."

Zav is a state of impurity that may befall a man.

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In two ways, we are one: In our essence, and in our character. In our essence, we are all one soul, with one source. In our character, we are all complimentary of each other, none of us complete, each one contributing what the other lacks, each one adding his touch of perfection to his fellow. Like a massive jigsaw puzzle, we fit together to make a single perfect whole. None of us is perfect without all the rest of us. And all the rest of us are incomplete when a single individual is missing.

From: Bringing Heaven Down to Earth by Tzvi Freeman - tzvif@aol.com