Musnad Ahmad 790:166

Rawh narrated to us, Shu'bah narrated to us, Abu al-Tayyah narrated to us, he said: I heard a man from Banu Layth saying: I bear witness regarding 'Imran ibn Husayn that he narrated that the Messenger of Allah (peace and blessings of Allah be upon him) forbade the *hanatam* (green jars), the gold ring, and the wearing of silk.