It should be noted that when relating a dream it should be done without adding anything to it or subtracting anything from it. For, if a person does this he spoils and corrupts the dream. Moreover, Rasoolullah (Sallallaahu alayhi wasallam) has strongly prohibited anyone from doing this.
His also reported as saying that anyone who invents a lie linking it to him or his (own) father or friend, he will not even smell the sweet fragrance of Jannah.
His also reported as saying: “There are three persons whom Allah will punish severely on the Day of Qiyaamah : a person who relates a false dream : he will be made to tie a knot between two grains of barley which he will never be able to do; a man who paints a picture of animate objects; he will be made to put life into them which he will never be able to do; a man who leads a people in Salaah while they dislike him”.
It is advisable for a person who sees an unpleasant or disturbing dream that he spits thrice on his left side as soon as he wakes up and thereafter seek Allah’s protection from the accursed devil. Rasoolullah (sallallaahu-alayhi-wasallam) and his followers used to do likewise.