Musnad Ahmad 1153:965

'Affan narrated to us, he said: Hammad ibn Salamah narrated to us, he said: 'Ata' ibn al-Sa'ib informed us, from Ibrahim, from 'Alqamah ibn Qays, from 'Aishah, she said: "It is as if I am looking at the glistening of the perfume in the parting of the hair of the Messenger of Allah, may Allah bless him and grant him peace, while he was in the state of Ihram."