Abu Dawud Book 27, Hadith Number 4089.

Chapter : On the meaning of the quranic verse that they should cast their outer garments over their persons.

Narated By ‘Aisha, Ummul Mu’minin : Safiyyah, daughter of Shaybah, said that ‘Aisha mentioned the women of Ansar, praised them and said good words about them. She then said: When Surat an-Nur came down, they took the curtains, tore them and made head covers (veils) of them.