“The Prophet صلى الله عليه و سلم said: Do not drink water in one gulp (or one breath) like a camel, but take it in two or three installments (with break for breaths); take the name of Allah (i.e. recite Bismillah) when you start drinking and praise Him (say Alhamdulillah) when you finish.”
(Transmitted by Tirmidhi, Narrated Abdullah ibn Abbas [ra])
