It is reported that once Abu Jahl was eating some dates...

It is reported that once Abu Jahl was eating some dates mingled with butter and was saying mockingly that it was the Zaqqum against which Muhammad warned us and we eat our fill of it. Rejecting his false claim, God Almighty said that the fruit of the tree of Zaqqum was the food of sinners rather than what Abu Jahl conceived of it. Any molten metal, e.g. gold, silver, and copper, is called muhl.

Some also hold that by it oil impurities are being meant such that when oil is heated, its impurities settle as sediment or dregs which are also called durdiy al-zit (“oil dregs”). The fruit of the tree of Zaqqum boils in bellies in the manner of boiling scalding water cutting up their…