Sayyiduna Abu Mas'ud (may Allah be pleased with him) said: the Prophet (peace and blessings be upon him) became thirsty near the Ka'bah and asked for a drink. He (peace and blessings be upon him) was brought nabidh from the Siqayah (the pilgrims' drinking supply). He (peace and blessings be upon him) brought it close to his mouth and frowned. A man asked: "Is it unlawful?" He (peace and blessings be upon him) said: "No."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14747