Dhakwan (may Allah have mercy on him) narrates from Sayyiduna Mu'awiyah bin Abi Sufyan (may Allah be pleased with him) that the Prophet (peace and blessings be upon him) said: "Whoever drinks wine, flog him." He (peace and blessings be upon him) said this three times. "Then if they drink a fourth time, kill them."
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 16816