One day as Mandū was walking in the forest, he saw four birds but did not know from where they had come. He also saw a black stone, and nearby, a locked church. In his dream that night he saw the key to the church and a candelabra buried under the black stone. The next morning he went and found the key under the black stone, opened the church and entered it to pray. From that day that church became a place for worship for all the residents of the village. One day, as Mandū was walking according to his habit, he saw a large cave filled with human bones. He inquired and was told that some people had escaped from the Persians and had hidden themselves in this cave. The Persians found the cave and lit a fire before its entry, killing those inside it.