5:52
فَتَرَى الَّذِينَ فِي قُلُوبِهِم مَّرَضٌ يُسَارِعُونَ فِيهِمْ يَقُولُونَ نَخْشَى أَن تُصِيبَنَا دَآئِرَةٌ فَعَسَى اللّهُ أَن يَأْتِيَ بِالْفَتْحِ أَوْ أَمْرٍ مِّنْ عِندِهِ فَيُصْبِحُواْ عَلَى مَا أَسَرُّواْ فِي أَنْفُسِهِمْ نَادِمِينَ
Those in whose hearts is a disease - thou seest how eagerly they run about amongst them, saying: "We do fear lest a change of fortune bring us disaster." Ah! perhaps Allah will give (thee) victory, or a decision according to His will. Then will they repent of the thoughts which they secretly harboured in their hearts.
8:36
إِنَّ الَّذِينَ كَفَرُواْ يُنفِقُونَ أَمْوَالَهُمْ لِيَصُدُّواْ عَن سَبِيلِ اللّهِ فَسَيُنفِقُونَهَا ثُمَّ تَكُونُ عَلَيْهِمْ حَسْرَةً ثُمَّ يُغْلَبُونَ وَالَّذِينَ كَفَرُواْ إِلَى جَهَنَّمَ يُحْشَرُونَ
The Unbelievers spend their wealth to hinder (man) from the path of Allah, and so will they continue to spend; but in the end they will have (only) regrets and sighs; at length they will be overcome: and the Unbelievers will be gathered together to Hell;-
23:40
قَالَ عَمَّا قَلِيلٍ لَيُصْبِحُنَّ نَادِمِينَ
(Allah) said: "In but a little while, they are sure to be sorry!"
46:6
وَإِذَا حُشِرَ النَّاسُ كَانُوا لَهُمْ أَعْدَاء وَكَانُوا بِعِبَادَتِهِمْ كَافِرِينَ
And when mankind are gathered together (at the Resurrection), they will be hostile to them and reject their worship (altogether)!