Musnad Ahmad 1153:2061

Rawh narrated to us, he said: Abu ‘Amir al-Khazzaz narrated to us, from Ibn Abi Mulaykah, from ‘Aishah, that she said: "I perfumed him—meaning the Prophet, peace and blessings of Allah be upon him—when he entered into the state of Ihram, with the best of what I could find of my perfume."