Untitled AI art by @Hadi_Bani

Create a realistic historical portrait of Khwaja Nasir al-Din al-Tusi based on this sketch. Middle-aged Persian scholar, serious and thoughtful expression, dark eyes, thick eyebrows, full beard and mustache, wearing a traditional Persian turban and simple scholar robe. Natural skin texture, highly detailed face, realistic lighting, soft neutral background, museum-quality portrait, historically plausible Islamic Persian attire, front three-quarter view, solemn and dignified mood.