Jami` at-Tirmidhi Book 26, Hadith 24
That the Prophet (ﷺ) would breathe three times in the vessel and say: "It is more wholesome and thirst quenching."
This Hadith is Hasan Gharib. Hisham Ad-Dastawa'i reported it from Abu 'Isam, from Anas.
From his father, from his grandfather who said: "I saw the Messenger of Allah (ﷺ) drinking while standing and sitting."
This Hadith is Hasan Sahih.
From Thumamah, from Anas that: "The Prophet (ﷺ) would breathe three times in the vessel."
Another chain from Anas bin Malik: "The Prophet (ﷺ) would breathe three times in the vessel."
He said: This Hadith is Hasan Sahih.