What is the ruling regarding a disbeliever who drank and bathed from Zamzam water? And what does one say when drinking Zamzam water?

A disbeliever's drinking of Zamzam water or bathing with it does not constitute entry into Islam. The disbeliever remains in their state of disbelief unless they pronounce the two testimonies of faith and establish the pillars of Islam. There is no religious impediment preventing a disbeliever from drinking Zamzam water or bathing with it. What is said about the disapproval of using it to remove impurities is not correct. It is recommended, when drinking Zamzam water, to face the Qiblah, mention Allah's name, breathe three times, drink one's fill, and then praise Allah. Ibn Abbas used to supplicate upon drinking it: "O Allah, I ask You for beneficial knowledge, abundant provision, and healing from every disease."