Abd ar-Rahman ibn Nasir as-Sa'di

Sheikh Abdul Rahman bin Nasser Al-Saadi, also known as al-Siʿdī (1889–1957), was an Islamic Scholar from Saudi Arabia. He was a teacher and an author in Unaizah, Saudi Arabia. He authored more than 40 books in several different fields including tafsir, fiqh, and 'aqida. al-Sa'di was an influential figure in the field of tafsir and his book of tafsir entitled Taysir al-Kareem al-Rahman has been described as arguably one of the most popular tafsirs written by modern Salafi scholars. He served as the Imam and Khatib for the largest jami' mosque and director of the religious training school, al-Ma'had al-'Ilmi, of Unayzah.