It's very naive of You to believe in the dream, to believe that you can fall asleep forever. In the morning the body was unconscious. He was sure to be dead. He was to be buried. Only a stranger didn't believe that he was dead, but nobody believed that it is was a lethargic dream.
His body was lying under several metres of humid soil.
He didn't find the rest, he only knew, what everlasting sleep was. He wanted to become a master, but he was just a slave. He was sleeping and didn't know what his sleep turned out to be. And still he fell asleep in that world, but could his dream contain another dream?
It would have been worse to wake up and find himself below ground. There were so many people buried alive, who were lying somewhere nearby, they were dying of the thought that they had been interred too early.
The main point was that there was no way out and they were going to stay there forever, that fear would shroud their mind and death would come like black dream.