It is narrated from Sayyiduna Muawiyah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever drinks alcohol, flog him. If he drinks again, flog him again. If he drinks a third time, flog him again. If he drinks a fourth time, then kill him."
Hadith Referenceمسند احمد / مسند الشاميين / 16926
Hadith Gradingحکم دارالسلام:حديث صحيح، وهذا إسناد حسن