Musnad Ahmad 674:1

Al-Fadl ibn Dukayn narrated to us, Sharik narrated to us, from Abu Ja’far al-Farra’, he said: I heard Abu Umayyah al-Fazari say: "I saw the Messenger of Allah, peace and blessings of Allah be upon him, being cupped." And Abu Nu’aym did not say once: "Al-Farra’," Abu Ja’far said: "And he did not say al-Farra’."