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.
Sahih al-Bukhari Book 74, Hadith 57
← Previous Hadith Allah's Messenger (ﷺ) said, "When you drink (water), do not breath in the vessel; and when you urinate, do not touch your penis with your right hand. And when you cleanse yourself after defecation, do not use your right hand."

Sahih al-Bukhari Book 74, Hadith 56 Next Hadith → While Hudhaita was at Mada'in, he asked for water. The chief of the village brought him a silver vessel. Hudhaifa threw it away and said, "I have thrown it away because I told him not to use it, but he has not stopped using it. The Prophet (ﷺ) forbade us to wear clothes of silk or Dibaj, and to drink in gold or silver utensils, and said, 'These things are for them (unbelievers) in this world and for you (Muslims) in the Hereafter.' "

Sahih al-Bukhari Book 74, Hadith 58