Allah gave a parable for what the disbelievers spend in this life, as Mujahid, Al-Hasan and As-Suddi said.
﴿مَثَلُ مَا يُنْفِقُونَ فِى هِـذِهِ الْحَيَوةِ الدُّنْيَا كَمَثَلِ رِيحٍ فِيهَا صِرٌّ﴾
(The likeness of what they spend in this world is the likeness of a wind of Sir;) a frigid wind, as Ibn `Abbas, `Ikrimah, Sa`id bin Jubayr, Al-Hasan, Qatadah, Ad-Dahhak, Ar-Rabi` bin Anas and others have said. `Ata' said that Sir, means, `cold and snow.' Ibn `Abbas and Mujahid are also reported to have said that Sir means, `fire'. This latter meaning does not contradict the meanings we mentioned above, because extreme cold weather, especially when accompanied by snow, burns plants and produce, and has the same effect fire has on such growth.
﴿أَصَابَتْ حَرْثَ قَوْمٍ ظَلَمُواْ أَنفُسَهُمْ فَأَهْلَكَتْهُ﴾
(It struck the harvest of a people who did wrong against themselves and destroyed it) ﴿3:117﴾, by burning. This Ayah mentions a calamity that strikes produce that is ready to harvest, destroying it by burning and depriving its owner of it when he needs it the most. Such is the case with the disbelievers, for Allah destroys the rewards for their good deeds in this life, just as He destroyed the produce of the sinner because of his sins. Both types did not build their work on firm foundations,
﴿وَمَا ظَلَمَهُمُ اللَّهُ وَلَـكِنْ أَنفُسَهُمْ يَظْلِمُونَ﴾
(And Allah wronged them not, but they wronged themselves.)
﴿يأَيُّهَا الَّذِينَ ءَامَنُواْ لاَ تَتَّخِذُواْ بِطَانَةً مِّن دُونِكُمْ لاَ يَأْلُونَكُمْ خَبَالاً وَدُّواْ مَا عَنِتُّمْ قَدْ بَدَتِ الْبَغْضَآءُ مِنْ أَفْوَهِهِمْ وَمَا تُخْفِى صُدُورُهُمْ أَكْبَرُ قَدْ بَيَّنَّا لَكُمُ الاٌّيَـتِ إِنْ كُنتُمْ تَعْقِلُونَ - هَآأَنتُمْ أُوْلاءِ تُحِبُّونَهُمْ وَلاَ يُحِبُّونَكُمْ وَتُؤْمِنُونَ بِالْكِتَـبِ كُلِّهِ وَإِذَا لَقُوكُمْ قَالُواْ ءَامَنَّا وَإِذَا خَلَوْاْ عَضُّواْ عَلَيْكُمُ الاٌّنَامِلَ مِنَ الْغَيْظِ قُلْ مُوتُواْ بِغَيْظِكُمْ إِنَّ اللَّهَ عَلِيمٌ بِذَاتِ الصُّدُورِ - إِن تَمْسَسْكُمْ حَسَنَةٌ تَسُؤْهُمْ وَإِن تُصِبْكُمْ سَيِّئَةٌ يَفْرَحُواْ بِهَا وَإِن تَصْبِرُواْ وَتَتَّقُواْ لاَ يَضُرُّكُمْ كَيْدُهُمْ شَيْئاً إِنَّ اللَّهَ بِمَا يَعْمَلُونَ مُحِيطٌ ﴾
(118. O you who believe! Take not as (your) Bitanah (advisors, helpers) those other than your own, since they will not fail to do their best to corrupt you. They desire to harm you severely. Hatred has already appeared from their mouths, but what their breasts conceal is far worse. Indeed We have made plain to you the Ayat if you understand.) (119. Lo! You are the ones who love them but they love you not, and you believe in all the Scriptures. And when they meet you, they say, "We believe.'' But when they are alone, they bite their Anamil at you in rage. Say: "Perish in your rage. Certainly, Allah knows what is in the breasts (all the secrets). '') (120. If a good befalls you, it grieves them, but if some evil overtakes you, they rejoice at it. But if you remain patient and have Taqwa, not the least harm will their cunning do to you. Surely, Allah surrounds all that they do.)