Curious historical footnote: when the Moors invaded southern Spain, they took this custom with them and the pronunciation changed over the centuries from "Allah, Allah, Allah," to "Olé, olé, olé," which you still hear in bullfights and in flamenco dances.
Datu historiko bitxi bat - Moroek Espainiar hegoaldea inbaditu zutenean, eurekin eraman zuten ohitura hau eta ahoskera aldatu zioten mendeen poderioz, “Allah, Allah, Allah" "Olé, olé, olé,"izatera pasatu zen. Gaur egun zezen plazatan eta dantza flamenkoetan entzuten da.ted2019 ted2019