﴿ فَتَرَى ٱلَّذِينَ فِى قُلُوبِهِم مَّرَضٌۭ يُسَٰرِعُونَ فِيهِمْ يَقُولُونَ نَخْشَىٰٓ أَن تُصِيبَنَا دَآئِرَةٌۭ ۚ فَعَسَى ٱللَّهُ أَن يَأْتِىَ بِٱلْفَتْحِ أَوْ أَمْرٍۢ مِّنْ عِندِهِۦ فَيُصْبِحُوا۟ عَلَىٰ مَآ أَسَرُّوا۟ فِىٓ أَنفُسِهِمْ نَٰدِمِينَ ﴾

“And yet thou canst see how those in whose hearts there is disease vie with one another for their good will, saying [to themselves], "We fear lest fortune turn against us." But God may well bring about good fortune [for the believers] or any [other] event of His own devising, whereupon those [waverers] will be smitten with remorse for the thoughts which they had secretly harboured within themselves-”

Please check ayah 5:53 for complete tafsir.