"I heard Mu'awiyah say to a group of Muhajirun and Ansar who were around him: 'Do you know that the Messenger of Allah forbade wearing silk?' They said: 'By Allah, yes.' He said 'And (he forbade) wearing gold unless it was broken (into smaller pieces)?' They said: 'Yes.'" 'Ali bin Ghurab contradicted him; he reported it from Bahais, from Abu Shaikh, from Ibn 'Umar.
Sunan an-Nasa'i Book 48, Hadith 120
← Previous Hadith "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.'"

Sunan an-Nasa'i Book 48, Hadith 119 Next Hadith → "I heard Ibn 'Umar say: 'The Messenger of Allah forbade wearing gold unless it is broken (into smaller pieces).'"

Sunan an-Nasa'i Book 48, Hadith 121