It is narrated from Abu Sa'id Khudri (may Allah be pleased with him) that the Prophet Muhammad (peace and blessings be upon him) forbade blowing into a drinking vessel. A man asked: "If I see something undesirable in the vessel, what should I do?" He replied: "Pour it out." The man said: "I cannot quench my thirst in one breath." He said: "Then remove the cup from your mouth when you breathe." Imam Tirmidhi says: This hadith is Hasan Sahih.

‘Abdullah bin Abbas (may Allah be pleased with them both) narrates that when the Prophet (peace and blessings of Allah be upon him) used to drink, he would drink in two breaths. Imam Tirmidhi says:
1- This hadith is gharib,
2- We know it only from the narration of Rushdein bin Kuraib,
3- I asked Abu Muhammad Abdullah bin Abdur Rahman Darimi about Rushdein bin Kuraib, saying: Is he stronger or Muhammad bin Kuraib? He said: Both are very close (in rank), and in my view, Rushdein bin Kuraib is more preferred,
4- I asked Muhammad bin Ismail Bukhari about him, and he said: Muhammad bin Kuraib is more preferred than Rushdein bin Kuraib,
5- In my view, the statement of Abu Muhammad Abdullah bin Abdur Rahman Darimi is more correct that Rushdein bin Kuraib is more preferred and greater; he met Ibn Abbas and saw him. These two are brothers, and from both of them, munkar ahadith are also narrated.

It is narrated from Abdullah bin Abbas (may Allah be pleased with them) that the Prophet Muhammad (peace and blessings be upon him) forbade breathing and blowing into a vessel. Imam Tirmidhi says:
This hadith is Hasan Sahih.

Narrated from Abu Qatadah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings of Allah be upon him) said: "When any of you drinks water, he should not breathe into the vessel." 1. Imam Tirmidhi says: This hadith is hasan sahih.