اِذَا٘ اُلۡقُوۡا فِيۡهَا سَمِعُوۡا لَهَا شَهِيۡقًا وَّهِيَ تَفُوۡرُۙ‏

When they are thrown into it, they hear from it a [dreadful] inhaling while it boils up