ابنُ السَّبيل أوَّلُ شاربٍ ، يَعْنِي مِنْ زَمْزَمَ
It is reported that Abu Huraira said:
“The Messenger of Allah ﷺ , said:” The traveler is the first drinker, meaning from the water of Zamzam.”
This hadeeth was transmitted by at-Tabarani in al-Mu’jam as-Sagir (252),“ar-Raud” (1033).
 It means that the traveler has the right to drink Zamzam water before the local resident.