1 Kings 9:24

But Pharaoh's daughter came up out of the city of David,.... Where he placed her when he first married her, until he had finished his buildings, 1 Kings 3:1, which being done he brought her from thence unto her house, which Solomon had built for her; the reason of which is given, not only because it was the house of David, but because it was holy by the ark being there for some time; and therefore he did not judge it proper that his wife, an Egyptian woman, and sometimes in her impurity, should dwell there; see 2 Chronicles 8:11,

then did he build Millo: this being particularly repeated from 1 Kings 9:15, and following upon what is said of Pharaoh's daughter, has led many Jewish writers to conclude her house was built at Millo; and indeed, without supposing this, it is hard to conceive why it should be observed here; the Targum on 2 Chronicles 8:11 calls her name Bithiah.