I gave Zamzam water to Messenger of Allah ﷺ and he drank it while standing. ʿAsim (a sub-narrator) said that ʿIkrima took the oath that on that day the Prophet ﷺ had not been standing but riding a camel.  

قَالَ سَقَيْتُ رَسُولَ اللَّهِ ﷺ مِنْ زَمْزَمَ فَشَرِبَ وَهُوَ قَائِمٌ قَالَ عَاصِمٌ فَحَلَفَ عِكْرِمَةُ مَا كَانَ يَوْمَئِذٍ إِلاَّ عَلَى بَعِيرٍ  

Anas used to breathe twice or thrice in the vessel (while drinking) and used to say that the Prophet; used to take three breaths while drinking.  

كَانَ أَنَسٌ يَتَنَفَّسُ فِي الإِنَاءِ مَرَّتَيْنِ أَوْ ثَلاَثًا وَزَعَمَ أَنَّ النَّبِيَّ ﷺ كَانَ يَتَنَفَّسُ ثَلاَثًا