Hazrat Umar ibn al-Khattab (RA) was given this title by some historians for his wisdom, intelligence, and administrative genius. However, various companions were praised for different qualities. Hazrat Ali (RA) was known for his knowledge and judgment, while Hazrat Muawiyah (RA) was known for his political acumen. The title reflects Umar's exceptional ability to solve complex problems and establish effective governance systems during his caliphate.