Answered by Shaykh Faraz Rabbani
Can Zamzam water be used for doing wudhu while on hajj? i.e in the haram sharief itself where the source of water is present- what are the rulings regarding this?
Walaikum assalam wa rahmatullah,
Yes, Zamzam can be used for wudu and ghusl, though it is best that this be done in a state of ritual purity, as this is closest to respecting this blessed water. It is improper to remove filth with it. [See: Ibn Abidin, Radd al-Muhtar; Tahtawi, Hashiyat al-Maraqi]