Musnad Ahmad 27:1629

Yunus narrated to us, Hammad—meaning Ibn Salamah—narrated to us, from Farqad al-Sabakhi, from Sa'id ibn Jubayr, from Ibn Umar: "That the Prophet, peace and blessings of Allah be upon him, anointed himself with oil that was not scented, while he was in the state of Ihram."