Qabasفَرِحَ ٱلۡمُخَلَّفُونَ بِمَقۡعَدِهِمۡ خِلَٰفَ رَسُولِ ٱللَّهِ وَكَرِهُوٓاْ أَن يُجَٰهِدُواْ بِأَمۡوَٰلِهِمۡ وَأَنفُسِهِمۡ فِي سَبِيلِ ٱللَّهِ وَقَالُواْ لَا تَنفِرُواْ فِي ٱلۡحَرِّۗ قُلۡ نَارُ جَهَنَّمَ أَشَدُّ حَرّٗاۚ لَّوۡ كَانُواْ يَفۡقَهُونَ ٨١
Farihal-mukhallafūna bimaq'adihim khilāfa rasūlillāhi wakarihū an yujāhidū bi amwālihim wa anfusihim fī sabīlillāhi waqālū lā tanfirū fil-harri qul nāru jahannama ashaddu harral law kānū yafqahūn
Those who remained behind495 rejoiced in their staying [at home] after [the departure of] the Messenger of Allāh and disliked to strive with their wealth and their lives in the cause of Allāh and said, "Do not go forth in the heat." Say, "The fire of Hell is more intense in heat" - if they would but understand.
Footnotes
495 Literally, "were left behind [as Allāh willed]" due to their false excuses having been accepted by the Prophet (ﷺ). While pleased with their assumed deception, in reality, Allāh had prevented their participation knowing of their hypocrisy and evil intent.