‹ Revised Form "Prudential Information Returns for Islamic Banks" (PIRI)_3 April 2018 Compliance with the CBB Rules Applicable to Controllers_6 March 2018 › Implementation of Wage Protection System (WPS)_15 March 2018 Click here to download the Letter in PDF format. ‹ Revised Form "Prudential Information Returns for Islamic Banks" (PIRI)_3 April 2018 Compliance with the CBB Rules Applicable to Controllers_6 March 2018 ›