"Speak unto the children of Israel, and say, 'When a woman hath conceived and hath borne a manchild, she shall be unclean seven days: even in like manner as when she is put apart in time of her natural disease.

But the houses in villages which have no walls round about them, shall be counted like unto the fields of the country, and may be bought out again at any season, and shall go out free in the trumpet year.