اَشِحَّةً عَلَيْكُمْ ۖ فَاِذَا جَاۤءَ الْخَوْفُ رَاَيْتَهُمْ يَنْظُرُوْنَ اِلَيْكَ تَدُوْرُ اَعْيُنُهُمْ كَالَّذِيْ يُغْشٰى عَلَيْهِ مِنَ الْمَوْتِۚ فَاِذَا ذَهَبَ الْخَوْفُ سَلَقُوْكُمْ بِاَلْسِنَةٍ حِدَادٍ اَشِحَّةً عَلَى الْخَيْرِۗ اُولٰۤىِٕكَ لَمْ يُؤْمِنُوْا فَاَحْبَطَ اللّٰهُ اَعْمَالَهُمْۗ وَكَانَ ذٰلِكَ عَلَى اللّٰهِ يَسِيْرًا ( الأحزاب: ١٩ )
Ashihhatan 'alaikum faizaa jaaa'al khawfu ra aytahum yanzuroona ilaika tadooru a'yunuhum kallazee yughshaa 'alaihi minal mawti fa izaa zahabal khawfu salqookum bi alsinatin hidaadin ashibbatan 'alal khayr; ulaaa'ika lam yu'minoo fa ahbatal laahu a'maalahum; wa kaana zaalika 'alal laahi yaseeraa (al-ʾAḥzāb 33:19)
Indisposed toward you. And when fear comes, you see them looking at you, their eyes revolving like one being overcome by death. But when fear departs, they lash you with sharp tongues, indisposed toward [any] good. Those have not believed, so Allah has rendered their deeds worthless, and ever is that, for Allah, easy. (Al-Ahzab  : 19)
1 Mufti Taqi Usmani
(and that too) with a greed against you (i.e. to extract a share of spoils from you). But when fear comes, you will see them looking towards you, rolling their eyes, like the one who gets faint because of death. Then once fear is gone, they assail you with sharp tongues, in greed for the good (i.e. the wealth acquired as spoils). These people did not accept faith (in real terms), therefore Allah has nullified their acts. All this is so easy for Allah.