Musnad Ahmad 145:3

Affan narrated to us, Aban narrated to us, Yahya ibn Abi Kathir narrated to us, from Zayd, from Abu Sallam, from Abu Rashid al-Hubrani, from Abd al-Rahman ibn Shibl al-Ansari, that the Messenger of Allah (peace and blessings of Allah be upon him) said: "Indeed, the merchants are the wicked ones." A man said: "O Prophet of Allah, has Allah not made trade lawful?" He said: "Indeed, they speak and lie, and they swear and commit sin."