Narrated Thumama bin `Abdullah: Anas used to breathe twice or thrice in the vessel (while drinking) and used to say that the Prophet; used to take three breaths while drinking.
Hadith ReferenceSahih Bukhari / The Book of Drinks / Hadith: 5631
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة