Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[261] He also ordered that those whose bodies were afflicted with leprosy, and that had a gonorrhea, should not come into the city; ¹ nay, he removed the women, when they had their natural purgations, till the seventh day; after which he looked on them as pure, and permitted them to come in again. The law permits those also who have taken care of funerals to come in after the same manner, when this number of days is over; but if any continued longer than that number of days in a state of pollution, the law appointed the offering two lambs for a sacrifice; the one of which they are to purge by fire, and for the other, the priests take it for themselves. In the same manner do those sacrifice who have had the gonorrhea. But he that sheds his seed in his sleep, if he go down into cold water, has the same privilege with those that have lawfully accompanied with their wives. And for the lepers, he suffered them not to come into the city at all, nor to live with any others, as if they were in effect dead persons; but if any one had obtained by prayer to God, the recovery from that distemper, and had gained a healthful complexion again, such a one returned thanks to God, with several sorts of sacrifices; concerning which we will speak hereafter.