Musnad Ahmad 32:1430

Yunus narrated to us, Hammad narrated to us, from Thabit, from Anas, who said: "I have not touched with my hand any brocade nor silk softer than the palm of the Messenger of Allah, may Allah bless him and grant him peace. And I have not smelled any scent that was more pleasant than the scent of the Messenger of Allah, may Allah bless him and grant him peace."