Abu Dawud Book 27, Hadith Number 4106.
Chapter : Hanging down of lower garment by women.
Narated By N/A : The tradition mentioned above has also been transmitted by Umm Salamah from the Prophet (peace be upon him) through a different chain of narrators.
Abu Dawud adds: Ibn Ishaq and Ayyub b. Musa transmitted it from Nafi’ from Safiyyah.