"The Messenger of Allah (ﷺ) prohibited breathing in the vessel, or blowing into it."

This Hadith is Hasan Sahih.
Jami` at-Tirmidhi Book 26, Hadith 29
← Previous Hadith That the Prophet (ﷺ) prohibited blowing into the drink. A man said: "What about if one sees something floating in the vessel?" He said: "Spill it out (removing that)." He said: "I can not drink in one breath." He said: "Then remove the cup away from your mouth."

This Hadith is Hasan Sahih.

Jami` at-Tirmidhi Book 26, Hadith 28 Next Hadith → From his father, that the Messenger of Allah (ﷺ) said: "When one of you drinks, then do not breathe into the vessel."

This Hadith is Hasan Sahih.

Jami` at-Tirmidhi Book 26, Hadith 30