Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:56:52

Will be eating from trees of zaqqum  

will assuredly eat from a Zaqqūm tree (min zaqqūm, the explication of shajar, ‘tree’),
القرآن:٥٦:٥٢

لَآكِلُونَ مِنْ شَجَرٍ مِنْ زَقُّومٍ  

{لآكلون من شجر من زقوم} بيان للشجر.