Musnad Ahmad 788:38

'Attab narrated to us, 'Abdullah narrated to us, Usamah bin Zayd informed us, Sa'id bin Abi Hind narrated to me, from Abu Murrah—the freed slave of 'Aqil, as far as I know—from Abu Musa, from the Prophet (peace and blessings of Allah be upon him), who said: "Whoever plays with dice has disobeyed Allah and His Messenger."