Chapter on Virtues of Hajj
Man Lā Yaḥḍuruh al-Faqīh|Volume 2|Book 3|Chapter 2
وَ رُوِيَ: «أَنَّهُ مَنْ رَوِيَ مِنْ مَاءِ زَمْزَمَ أُحْدِثَ لَهُ بِهِ شِفَاءٌ وَ صُرِفَ عَنْهُ دَاءٌ.
It has been narrated: "Whoever drinks their fill from the water of Zamzam will be granted healing through it, and an illness will be repelled from them."
- Ṣaḥīḥ al-Faqīh