Musnad Ahmad 25:1632

Yazid narrated to us, Sufyan informed us, from Salamah ibn Kuhayl, from al-Hasan al-'Arani, who said: Ibn Abbas was asked about a man, when he throws the pebbles at the Jamrah, may he apply perfume? He said: As for me, I have "seen musk on the head of the Messenger of Allah, may Allah bless him and grant him peace." Is it from the perfume or not?