Ungan remained with Yakusan for some time, then one day decided to  leave: he explained to Yakusan that he had made a vow to stay with  Hyakujo. Yakusan agreed, and Ungan set off down the mountain, Dogo  accompanying him a little way, and then returning to Yakusan, who asked,  “Did you see your brother off?” “Yes, I did,” replied Dogo, and then added, “Is it alright for my brother to leave you?” “You  don’t have to ask such a thing,” said Yakusan. “We have been very  intimate for such a long time – we can do or say whatsoever we would  like to. So there is nothing for you to ask me.” “No, Osho,” said Dogo. “Your word can become a reference for the future, so please say something.” “Okay, I will say one thing,” replied Yakusan. “The eyes are alright, only the discipline is lacking.” Hearing  this, Dogo immediately left the monastery in pursuit of his brother.  When he caught up with him the following day, Dogo told Ungan what  Yakusan had said. The two brothers turned around and went back to  Yakusan, and remained with him till his death.