Women's Issues: Ritual Purity: Impurity after Giving Birth:
Why is the period of impurity after giving birth to a girl twice as long as for a boy?
The commentaries say that carrying and giving birth to a girl has a
greater effect on the mother, from which it takes twice as long to
"recover". The Talmud implies that there should have been 14 days
of "impurity" for a boy too, but the Torah reduced it to 7 to allow
the parents to rejoice together at the boy's circumcision on the 8th day.
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