Falak

Falak (Arabic: فلك) is the giant serpent mentioned in the One Thousand and One Nights. He resides below Bahamut, the giant fish, which carries along with a bull (Kujata) and an angel, the rest of the universe including six hells, the earths and the skies. Falak themselves resides in the seventh hell below everything else and it is said to be so powerful that only its fear of the greater power of Allah prevents it from swallowing all the creation above.