ماء زمزم
Water from the well of Zamzam in Makkah, described as blessed and responsive to the intention with which it is drunk.
مَاءُ زَمْزَمَ لِمَا شُرِبَ لَهُ
“Zamzam water serves the purpose for which it is drunk.” (meaning, not a literal translation)
Ibn al-Qayyim recounts his own use of Zamzam water when unwell, describing recovery he attributed in part to sincere intention alongside the water's recognized physical properties as a mineral-rich spring source.