2SA 20:3

3 And Dovid came to his Bais [(palace)] at Yerushalayim; and HaMelech took the ten nashim, his pilagshim, whom he had left to be shomer over the Bais, and put them in Bais Mishmeret [(seclusion)], and provided for them, but went not in unto them. So they were shut up unto their yom mot, living in almenut [(widowhood)].