The Shaikh ’Ali ibn Muhammad an-Nahraari, the Judge, the Imaam, the Linguist, the Faqeeh, may Allaah have mercy on him, said about Zamzam water, “And there [in Makkah] I memorised Umdatul-Ahkaam and Ar-Risaalah al-Far’iyyah and the Alfiyyah of Ibn Maalik [which is just over one thousand lines of poetry on Arabic grammar and morphology] in about ten months—and when memorising [if something] became difficult for me, I would drink some Zamzam water, perform ablution and pray in the area between the Black Stone and the Door of the Ka’bah and supplicate [to Allaah], and I would [as a result successfully] memorise it.”

Ad-Daw al-Laami, 3/128.