Leviticus 12:4 in the King James Version
And she shall then continue in the blood of her purifying three and thirty days; she shall touch no hallowed thing, nor come into the sanctuary, until the days of her purifying be fulfilled.
Context
3 In the eighth day the flesh of his foreskin shall be circumcised.
4 She shall continue in the blood of purification thirty-three days. She shall not touch any holy thing, nor come into the sanctuary, until the days of her purifying are completed.
5 But if she bears a female child, then she shall be unclean two weeks, as in her period; and she shall continue in the blood of purification sixty-six days.