Sahih Muslim
Sahih Muslim 2028 a
It is disliked to breathe into the vessel, and it is recommended to take three breaths, outside the vessel
Arabic hadith text
وَحَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، وَأَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ قَالاَ حَدَّثَنَا وَكِيعٌ، عَنْ عَزْرَةَ،
بْنِ ثَابِتٍ الأَنْصَارِيِّ عَنْ ثُمَامَةَ بْنِ عَبْدِ اللَّهِ بْنِ أَنَسٍ، عَنْ أَنَسٍ، أَنَّ رَسُولَ اللَّهِ صلى الله
عليه وسلم كَانَيَتَنَفَّسُ فِي الإِنَاءِ ثَلاَثًا .
Translation
Anas reported that Allah's Messenger (ﷺ) used to breathe three times in the course of a drink (i. e. he drank in three gulps).