Al-‘Abbās ibn ‘Ali (Arabic: العباس بن علي‎, Persian: عباس فرزند علی‎‎) (born 4th Sha‘bān 26 AH – 10 Muharram 61 AH; approximately May 15, 647 – October 10, 680) was the son of Imam Ali (the first Imam of Shiite Muslims and the fourth Caliph of Sunni Muslims, and Fatima bint Hizam commonly known as 'أم البنين' - Mother of the Sons).Abbas is revered by Shiite Muslims for his loyalty to his half-brother Hussein, his respect for the Households of Muhammad, and his role in the Battle of Karbala.