Du'a' Kumayl

The Du'a' Kumayl (Arabic: دعاء كميل, lit.'supplication of Kumayl') is a supplication (du'a') attributed to Ali ibn Abi Talib (d.661), the first Shia Imam, the fourth Rashidun caliph (r.656–661), and the cousin and son-in-law of the Islamic prophet Muhammad. It has been transmitted on the authority of Kumayl ibn Ziyad (d.c.708), a close associate of Ali. This du'a' contains esoteric teachings about divine mercy and repentance, and remains popular especially among Shia Muslims.