The Messenger of Allah ﷺ would not blow into his food or drink, nor would he breathe into the vessel.
حدثنا أبو كريب حدثنا عبد الرحيم بن عبد الرحمن المحاربي حدثنا شريك عن عبد الكريم عن عكرمة
لم يكن رسول الله ﷺ ينفخ في طعام ولا شراب ولا يتنفس في الإناء
No references are available.
[Sahih] Abu Dawud narrated it in the Book of Drinks, chapter on blowing into a drink and breathing into it, h: 3728, from the hadith of Abdul-Kareem Jazari with other wordings, and Tirmidhi, h: 1888, said it is hasan sahih, and the hadith has very many corroborating narrations.