A drinker was brought to Sayyiduna Umar (may Allah be pleased with him), and he said: I will send you to a man who will show you no leniency. He sent him to Muti' bin al-Aswad (may Allah be pleased with him) and said: Tomorrow morning apply the prescribed punishment to him. The next day Sayyiduna Umar (may Allah be pleased with him) went to him and found him beating very hard. On seeing this he said: You have all but killed the man! How many lashes have you given? He said: Sixty. He said: Waive the remaining 20 for him (let the severity of your beating count in place of them).
Abu Ubayd said: This hadith shows that "the drinker should not be flogged too severely, and that he is to be flogged after his intoxication has worn off."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17526