Leviticus 12:4

And for thirty-three days she shall continue in her unclean blood; she shall touch nothing holy, and shall not enter the sanctuary, until the days of her purification be fulfilled.

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.

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.