Musnad Ahmad 32:437

Bahz and 'Affan narrated to us, they said: Hammam narrated to us, Qatadah narrated to us, he said: I said to Anas: Which clothing was most pleasing? 'Affan said: Or most beloved to the Messenger of Allah, may Allah bless him and grant him peace? He said: "The Hibarah (striped garment)."