Beit Yosef (Hebrew: בית יוסף) (also transliterated Beth Yosef), written by Rabbi Joseph Karo, is a long and detailed commentary on the Arba'ah Turim ("Tur") by Jacob ben Asher. The Shulchan Aruch, which Rabbi Karo wrote later in his life, is a condensation of its rulings. Source: Wikipedia (en)