For the Jews one could incur defilement:
There was also a Mosaic ordinance which directed that a mother, after the passing of a certain period of time, should present herself, or have someone make the proper sacrifice for her, at the temple for purification. [3] Greeks held the menstruating woman as one of the three great causes of defilement, the other two being pork and garlic. [4]
For Jesus man is only defiled by that evil which may originate within the heart, and which finds expression in the words and deeds of such unholy persons. [5]