Those who considered it recommended to breathe in the vessel

It is narrated from Thumamah that he said: When Sayyiduna Anas (may Allah be pleased with him) drank water, he would take two or three breaths, and he would narrate that when the Messenger of Allah (peace and blessings be upon him) drank water, he would breathe in the vessel three times.

It is narrated from al-Hakam bin Atiyyah that he said: I saw Ibn Sirin taking three breaths whenever he drank water.

It is narrated from Mujahid that he said: When you drink water, breathe in the vessel three times.

It is narrated from Muhammad bin Abd al-Rahman bin Abi Bakr that he said: A man came and sat with Sayyiduna Ibn Abbas (may Allah be pleased with them both), and he asked him: Where have you come from (just now)? He said: I have come after drinking Zamzam water. Ibn Abbas (may Allah be pleased with them both) said: Did you drink Zamzam water the way it ought to be drunk? Then he said: When you drink Zamzam water, face the Qiblah, mention the name of Allah, and take three breaths.

It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) used to take three breaths in the vessel.

It is narrated from Sayyiduna Anas (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) used to breathe in the vessel three times, and he would say: "This way is easier, more pleasant and more satisfying."