The Prophet ﷺ came in upon her while she was putting on her head covering and said, "One wrap, not two."
أن النبي ﷺ دخل عليها وهي تختمر، فقال: لية لا ليتين.
Abu Dawud (4115), Ahmad (26522), and Hakim (4/194-195) all narrated it through Sufyan Thawri, from Habib bin Abu Thabit, from Wahb, the freed slave of Abu Ahmad, from Umm Salama, and he mentioned it.Hakim said, "Sahih isnad." I say, it is as he said. There has been disagreement over identifying Wahb, the freed slave of Abu Ahmad. Hakim held that he was Abu Sufyan, who is among the narrators relied upon by the two Sahihs, and this is why he graded this isnad sahih. In this he followed his teacher Daraqutni, and Mizzi adopted the same view. Ibn Hajar reported from Ibn Abdul-Barr that he said, "It is said his name was Qazman, and no name other than his kunya is confirmed for him." I say, the first view is more correct, and Allah knows best.Abu Dawud said, "The meaning of his saying, 'one wind, not two winds,' is that he means, do not wrap it the way a man does, do not repeat it in one fold or two folds."