It wasnarrated from Ibn 'Abbas that the Messenger of Allah (ﷺ)recited:
"O you who believe! Have fear of Allah as is His due, and dienotexcept as Muslims. [3:102] (Then he said): 'If a drop of Zaqqumwere to be dropped on the earth, it would ruin the livelihood of thepeople of this world, so how about those who have no food other thanit (i.e. Zaqqum)?'"
English reference: Vol. 5, Book 37, Hadith 4325
Arabic reference: Book 37, Hadith 4468