The Prophet ﷺ came in to see her while she was not wearing a head covering, so he said, "One wrap, not two."
حدثنا وكيع وعبد الرحمن عن سفيان عن حبيب يعني ابن أبي ثابت عن وهب مولى أبي أحمد
أن النبي ﷺ دخل عليها ولم تختمر فقال لية لا ليتين
Its isnad is daif, due to the unknown status of Wahb, as they have said. The hadith was narrated by Abu Dawud, 4/64, no. 4115. The meaning of the hadith is that he forbade her to wrap the headcovering around her head more than once, so that it would not resemble a turban and thus imitate men. In another version it reads, "while she was veiling herself."