Maliks Muwatta Book 20, Hadith Number 17.
Section : Veiling the Face while in Ihram.
Yahya related to me from Malik from Abd ar-Rahman ibn al-Qasim from his father that A’isha, the wife of the Prophet, may Allah bless him and grant him peace, said, “I perfumed the Messenger of Allah, may Allah bless him and grant him peace, for his ihram before he entered ihram, and when he came out of ihram before he did tawaf of the House.”