Leviticus 12:5

But if she bears a female child , then she shall be unclean two weeks , as in her menstruation . And she shall continue in the blood of her purifying for sixty-six days .

If she gives birth to a daughter, for two weeks the woman will be unclean, as during her period. Then she must wait sixty-six days to be purified from her bleeding.

But if she bear a maid child, then she shall be unclean two weeks, as in her separation : and she shall continue in the blood of her purifying threescore and six days.