Having tested this, in 1430 he took a bolder step by including "Caliph of Allah" (Khalifat al-Allah) as one of his titles on his coins.[18] In 1431 AD he issued a new coin inscribing Kalema-tut-shahadat.[4] Thus he reintroduced on his coins the Kalimah, which had disappeared from Bengal Sultanate coins for several centuries.