It is narrated from Sayyiduna Shurahbil bin Aws (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever drinks wine, flog him; then if he does it again" - he said this three times - "on the fourth time, kill him."
Hadith Referenceالمعجم الكبير للطبراني / باب الألف / 616