The writing on Nigerian Naira notes is not Arabic, but rather the Ajami script, a system using Arabic letters to write local languages like Hausa, intended to indicate denominations to literate users. Contrary to claims of "Islamization," the Central Bank of Nigeria maintains the script is a secular, historical, and cultural feature intended to facilitate financial inclusion. For a detailed explanation of the script's origin, read this report from BBC .

The lettering states the note's currency value. He also wants the army to stop using the Arabic inscription: "Victory is from God"

Letter from Africa: Culture clash over Nigeria's rival alphabets

EXPLAINER: What is this 'Arabic sign' on the naira all about?