'Clean' in the Bible

Let the king give authority to certain men in all the divisions of his kingdom, to get together all the fair young virgins and send them to Shushan, the king's town, to the women's house, under the care of Hegai, the king's servant, the keeper of the women: and let the things needed for making them clean be given to them;

And he was pleased with the girl and was kind to her; and he quickly gave her what was needed for making her clean, and the things which were hers by right, and seven servant-girls who were to be hers from the king's house: and he had her and her servant-girls moved to the best place in the women's part of the house.

Now every girl, when her turn came, had to go in to King Ahasuerus, after undergoing, for a space of twelve months, what was ordered by the law for the women (for this was the time necessary for making them clean, that is, six months with oil of myrrh and six months with sweet perfumes and such things as are needed for making women clean):