Nasrudin character is based on a real man who lived in the 1300s. It remains uncertain though, where the man lived as many countries claim to be the origin of the actual Mulla Nasrudin character and his tales.
*Reason for crying*, is a tale of how Nasruddin's wife serves him some spicy curry to teach him a lesson for not doing any work. The spicy hot curry made his eyes water and tears began to roll down his eyes. But Nasruddin gives another clever reason for his tears.