My friend sadek (46 years old), who believes in Allah, saw this and thought that this was the man's soul. This is because they believe that the spirit of God exists in all nature. In Bernard Werber's book, there is also a story about a family who kept their dead father's head in a glass jar for quite some time because they thought the spirit was inside their head. When it was meal time, they would put their father at the table and eat together.