Does being chased by known or unknown people in a dream, and the dreamer escaping them by flying in the sky, mean that God is taking their soul and making it fly? And does seeing an unknown man engaging in intercourse in a dream mean that God has taken the dreamer's soul, or is that from the wiles of Satan?

Disturbing dreams, including seeing sexual intercourse in a dream, are from Satan. What is prescribed for a Muslim who sees something he dislikes is to spit lightly to his left three times, seek refuge in Allah from Satan and from the evil of what he saw three times, then turn over onto his other side, and not tell anyone about it, for it will not harm him. If a woman sees in her dream that she is having intercourse, this is a natural nocturnal emission, and if she sees fluid (ejaculation), then ghusl (definition) (ritual bath) is obligatory for her; otherwise, it is not.