Ibn Qayyim al-Jawziyyah , whose full name is Muhammad ibn Abi Bakr ibn Ayyub ibn Sa'd al-Zarʿi al-Dimashqi, was a renowned 14th-century Islamic scholar, jurist, theologian, and spiritual guide from Damascus. He is best known for his close association with Ibn Taymiyyah, under whom he studied and whose reformist ideas he supported and developed further.