Musnad Ahmad 1034:139

Muhammad ibn Ja'far narrated to us, Shu'bah narrated to us, from Mansur, from Rib'i ibn Hirash, from his wife, from the sister of Hudhayfah, who said: The Messenger of Allah (peace and blessings of Allah be upon him) addressed us and said: "O assembly of women, do you not have in silver that with which you may adorn yourselves? Verily, there is no woman among you who wears gold and displays it, but she will be punished for it on the Day of Resurrection."