`Abdallah b. al-Harith b. Jaz' reported God's messenger as saying, "In hell there are snakes like Bactrian camels, one of which can give a sting the effect of which will be felt for forty years; and in hell there are scorpions like saddled mules, one of which can give a sting the effect of which will be felt for forty years."
Ahmad transmitted both traditions.