"I heard the Messenger of Allah say: 'Gold, equal amount."' (One of the narrators) Yaqub did not mention: "Equal amount." Muawiyah said: "This does not mean anything." 'Ubadah said; "By Allah I do not care if I am in a land where Muawiyah is not present. I bear witness that I heard the Messenger of Allah say that."
Sunan an-Nasa'i Book 44, Hadith 118
← Previous Hadith "Abu Al-Mutawakkil passed by them in the market and some people, including me, stood up to greet him. We said: 'We have come to you to ask you about transactions.' He said: 'I heard a man say to Abu Saeed Al-Khudri': 'Is there anyone between you and the Messenger of Allah (in the chain of narrators) apart from Abu Saeed Al-Khudri? He said: 'There is no one else between him and I. He said: Gold for gold, silver for silver, wheat for wheat, barley for barley, dates for dates, salt for salt, equal amounts. Whoever gives more than that or takes more has engaged in Riba, and the taker and the giver are the same."'

Sunan an-Nasa'i Book 44, Hadith 117 Next Hadith → "Dinar for Dinar Dirham for Dirham, no difference between them."

Sunan an-Nasa'i Book 44, Hadith 119