From Sahih Bukhari (Hadith 2368):
Narrated Ibn `Abbas:The Prophet (ﷺ) said, "May Allah be merciful to the mother of Ishmael! If she had left the water of Zamzam (fountain) as it was, (without constructing a basin for keeping the water), (or said, "If she had not taken handfuls of its water"), it would have been a flowing stream. Jurhum (an Arab tribe) came and asked her, 'May we settle at your dwelling?' She said, 'Yes, but you have no right to possess the water.' They agreed
Reference: Bukhari 2368