Musnad Ahmad 1153:581

Mu'awiyah ibn 'Amr narrated to us, he said: Ibrahim ibn Sa'd narrated to us, from Ibn Ishaq, from Muhammad ibn Ja'far ibn al-Zubayr, from 'Urwah, from 'Aishah, she said: "When I would apply oil to the Messenger of Allah, may Allah bless him and grant him peace, I would part his hair from the top of his crown, and I would let his forelock hang down."