It was narrated that a man said to Ibn Sirin : I saw as if a man was hanging from the sky with a chain and half of his body was black, half of his body white, and he had a tail like that of a donkey . Ibn Sirin said : I am that man. As for the white half of my body, it was for me during the day, and the black half returned the night and the chain with which I was hung from the sky, so he mentioned me that he ever ascends to heaven, and as for sin, it is a debt that meets me, and I pray in it, and it was as he crossed it .