﴿ فَرِحَ ٱلْمُخَلَّفُونَ بِمَقْعَدِهِمْ خِلَٰفَ رَسُولِ ٱللَّهِ وَكَرِهُوٓا۟ أَن يُجَٰهِدُوا۟ بِأَمْوَٰلِهِمْ وَأَنفُسِهِمْ فِى سَبِيلِ ٱللَّهِ وَقَالُوا۟ لَا تَنفِرُوا۟ فِى ٱلْحَرِّ ۗ قُلْ نَارُ جَهَنَّمَ أَشَدُّ حَرًّۭا ۚ لَّوْ كَانُوا۟ يَفْقَهُونَ ﴾

“THOSE [hypocrites] who were left behind rejoiced in their staying away [from war] after [the departure of] God's Apostle, for they hated the thought of striving with their possessions and their lives in God's cause; and they had [even] said [to the others], "Do not go forth to war in this heat!" Say: "The fire of hell is hotter by far!" Had they but grasped this truth!”

(Those who were left behind rejoiced) the hypocrites were pleased (at sitting still) at staying behind and not joining the battle of Tabuk (behind the Messenger of Allah, and were averse to striving with their wealth and their lives in Allah's way) in obedience of Allah. (And they said) to one another: (Go not forth in the heat!) do not go with Muhammad (pbuh) to the battle of Tabuk in the scorching heat. (Say) to them, O Muhammad: (The heat of hell is more intense of heat) is most intense in firebrands, (if they but understood) and believed.