(26) باب الشُّرْبِ بِنَفَسَيْنِ أَوْ ثَلاَثَةٍ
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.
Reference: Sahih al-Bukhari 5631
In-book reference: Book 74, Hadith 57
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 69, Hadith 535