لَّقَدْ رَضِيَ اللَّهُ عَنِ الْمُؤْمِنِينَ إِذْ يُبَايِعُونَكَ تَحْتَ الشَّجَرَةِ فَعَلِمَ مَا فِي قُلُوبِهِمْ فَأَنزَلَ السَّكِينَةَ عَلَيْهِمْ وَأَثَابَهُمْ فَتْحًا قَرِيبًا
Indeed, Allah was pleased with the believers when they gave their Bai'a (pledge) to you (O Muhammad SAW) under the tree, He knew what was in their hearts, and He sent down As-Sakinah (calmness and tranquillity) upon them, and He rewarded them with a near victory,
وَإِذْ قُلْنَا لَكَ إِنَّ رَبَّكَ أَحَاطَ بِالنَّاسِ ۚ وَمَا جَعَلْنَا الرُّؤْيَا الَّتِي أَرَيْنَاكَ إِلَّا فِتْنَةً لِّلنَّاسِ وَالشَّجَرَةَ الْمَلْعُونَةَ فِي الْقُرْآنِ ۚ وَنُخَوِّفُهُمْ فَمَا يَزِيدُهُمْ إِلَّا طُغْيَانًا كَبِيرًا
And (remember) when We told you: "Verily! Your Lord has encompassed mankind (i.e. they are in His Grip)." And We made not the vision which we showed you (O Muhammad as an actual eye-witness and not as a dream on the night of Al-Isra') but a trial for mankind, and likewise the accursed tree (Zaqqum, mentioned) in the Quran. We warn and make them afraid but it only increases them in naught save great disbelief, oppression and disobedience to Allah.
أَذَٰلِكَ خَيْرٌ نُّزُلًا أَمْ شَجَرَةُ الزَّقُّومِ
Is that (Paradise) better entertainment or the tree of Zaqqum (a horrible tree in Hell)?
إِنَّا جَعَلْنَاهَا فِتْنَةً لِّلظَّالِمِينَ
Truly We have made it (as) a trail for the Zalimun (polytheists, disbelievers, wrong-doers, etc.).