what he is saying is: "i will come inside soon." "you are part of our world." "you are not allowed to live in this world anymore." "i have come to take you with me." "i will come inside soon."
like this he is saying many strange things. hearing this boy come to one and only shockingly bad conclusion that it's all real.
next morning he tell his parents the story starting from village to yesterday night dream.
his parents don't believe in him and said that this is only his imaginary dream hearing all the strange things at village.
boy try to convince his parents but he failed. next night he has that strange dream again and he clearly heard what that creature is saying.
next day boy second time try to convince his parents but he failed.
that night same dream.
next day he don't say anything to his parents because they don't believe him. he became mantally unstable and keep himself in his room. he don't speak to his parents any more and only come outside of his room for eating.
now his parents get worried about his condition.
same things repeat upto a week.
that night boy has a dream.