Hadith 757

Ibn 'Abbas (May Allah be pleased with them) reported: The Messenger of Allah (PBUH) said, "Do not drink in one gulp like a camel, but in two or three (gulps). Mention the Name of Allah (i.e., say Bismillah) when you start drinking and praise Him (i.e., say Al-hamdu lillah) after you have finished (drinking)."

[At- Tirmidhi].