Musnad Abu Ya'la al-Mawsili 112:29

'Amr ibn al-Dahhak ibn Makhlad narrated to us, Abu 'Asim narrated to us, from Salim al-Khayyat, from al-Hasan, from Anas, who said: I have never smelled musk nor ambergris with a more pleasant scent than the Messenger of Allah, may Allah bless him and grant him peace.