Qabisah bin Dhu'ayb (may Allah have mercy on him) said that the Prophet (peace and blessings be upon him) said: "Flog the drinker up to three times; if he drinks a fourth time, kill him." The Prophet (peace and blessings be upon him) flogged a man even the fourth time, and so killing was lifted from the people. Flogging is established, and a concession was granted regarding killing.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17505