Abdullah bin Dinar عبد الله بن دينار العدوي · The Book of Adornment

"Mu'awiyah went on Hajj and he called a group of Ansar to the Ka'bah. He said: 'I adjure you by Allah, did you hear the Messenger of Allah forbid gold?' They said: 'Yes.' He said: 'And I bear witness to that.'"

"I was forbidden to wear red garments and gold rings, and to recite Qur'an when bowing."