Then she shall continue for thirty-three days in the blood of her purifying. She shall not touch anything holy, nor come into the sanctuary, until the days of her purifying are completed.
4. And she shall then continue. The uncleanness of seven days in the case of a male, and fourteen days for a female, has reference to the hemorrhage, as we shall also see elsewhere of the menstrual discharge. For the remainder of the time she is forbidden to take part in religious services, and to approach the sanctuary, (by which word the court is here...
The law here pronounces women lying-in ceremonially unclean. The Jews say, "The law extended even to an abortion, if the child was so formed as that the sex was distinguishable." 1. There was some time of strict separation immediately after the birth, which continued seven days for a son and fourteen for a daughter, Lev 12:2, Lev 12:5.
Commenting on Leviticus 12:1-5
But if she bear a maid child,.... A daughter, whether born alive or dead, if she goes with it her full time: then she shall be unclean two weeks; or fourteen days running; and on the fifteenth day be free or loosed, as the Targum of Jonathan, just as long again as for a man child: as in her separation; on account of her monthly...