As He grew into a young man, Baha'u'llah exhibited great sagacity and insight. The following story is told by ‘Abdu'l-Baha, Baha'u'llah's son.
One day while still a youth, Baha'u'llah went to visit Shaykh Muhammad Taqi Mujtahid Nuri, one of the great clerics of Iran at this time who was known as ‘Allamih (the very learned) Nuri, at his home in the village of Yalrtud, near Takur. ‘Allhmih had around him a group of his senior students whom he was teaching. He asked four of them, who had almost completed their studies and were about to receive their certificates, about an Islamic Tradition that says that Fatimih, the daughter of Muhammad, was the best of the women in the world except for the one to whom Mary gave birth. ‘Allamih asked these four what this Tradition meant, since Mary had no daughter. Each gave an explanation that did not satisfy their teacher. Then Baha'u'llah suggested that this Tradition was merely emphasizing the high station of Fatirnih by saying that only an imaginary person could be likened to her. The teacher was silent, but when Baha'u'llah had left he upbraided his pupils saying that he had expected more from them than this: that a mere youth would explain what they who wore a turban and the garb of the learned and had almost completed their studies had failed to discern.
(Moojan Momen , Baha’u’llah, A Short Biography)