Tree zaqqum

Al-Isrā’ 17:60

وَإِذۡ قُلۡنَا لَكَ إِنَّ رَبَّكَ أَحَاطَ بِٱلنَّاسِۚ وَمَا جَعَلۡنَا ٱلرُّءۡيَا ٱلَّتِيٓ أَرَيۡنَٰكَ إِلَّا فِتۡنَةٗ لِّلنَّاسِ وَٱلشَّجَرَةَ ٱلۡمَلۡعُونَةَ فِي ٱلۡقُرۡءَانِۚ وَنُخَوِّفُهُمۡ فَمَا يَزِيدُهُمۡ إِلَّا طُغۡيَٰنٗا كَبِيرٗا ٦٠

And [remember, O Muhammad], when We told you, "Indeed, your Lord has encompassed the people." And We did not make the sight which We showed you except as a trial for the people, as was the accursed tree [mentioned] in the Qur'an. And We threaten them, but it increases them not except in great transgression.

Aṣ-Ṣāffāt 37:62

أَذَٰلِكَ خَيۡرٞ نُّزُلًا أَمۡ شَجَرَةُ ٱلزَّقُّومِ ٦٢

Is Paradise a better accommodation or the tree of zaqqum?

Aṣ-Ṣāffāt 37:63

إِنَّا جَعَلۡنَٰهَا فِتۡنَةٗ لِّلظَّٰلِمِينَ ٦٣

Indeed, We have made it a torment for the wrongdoers.

Al-Fatḥ 48:18

۞ لَّقَدۡ رَضِيَ ٱللَّهُ عَنِ ٱلۡمُؤۡمِنِينَ إِذۡ يُبَايِعُونَكَ تَحۡتَ ٱلشَّجَرَةِ فَعَلِمَ مَا فِي قُلُوبِهِمۡ فَأَنزَلَ ٱلسَّكِينَةَ عَلَيۡهِمۡ وَأَثَٰبَهُمۡ فَتۡحٗا قَرِيبٗا ١٨

Certainly was Allah pleased with the believers when they pledged allegiance to you, [O Muhammad], under the tree, and He knew what was in their hearts, so He sent down tranquillity upon them and rewarded them with an imminent conquest

Al-Wāqi‘ah 56:52

لَأٓكِلُونَ مِن شَجَرٖ مِّن زَقُّومٖ ٥٢

Will be eating from trees of zaqqum