﴿ أَشِحَّةً عَلَيْكُمْ ۖ فَإِذَا جَآءَ ٱلْخَوْفُ رَأَيْتَهُمْ يَنظُرُونَ إِلَيْكَ تَدُورُ أَعْيُنُهُمْ كَٱلَّذِى يُغْشَىٰ عَلَيْهِ مِنَ ٱلْمَوْتِ ۖ فَإِذَا ذَهَبَ ٱلْخَوْفُ سَلَقُوكُم بِأَلْسِنَةٍ حِدَادٍ أَشِحَّةً عَلَى ٱلْخَيْرِ ۚ أُو۟لَٰٓئِكَ لَمْ يُؤْمِنُوا۟ فَأَحْبَطَ ٱللَّهُ أَعْمَٰلَهُمْ ۚ وَكَانَ ذَٰلِكَ عَلَى ٱللَّهِ يَسِيرًۭا ﴾

“begrudging you all help. But then, when danger threatens, thou canst see them looking to thee [for help, O Prophet], their eyes rolling [in terror] like [the eyes of] one who is overshadowed by death: yet as soon as the danger has passed, they will assail you [believers] with sharp tongues, begrudging you all that is good! [People like] these have never known faith - and therefore God will cause all their works to come to nought: for this is indeed easy for God.”

هَلُمَّ إِلَيْنَا (Come here towards us,) meaning, come to where we are in the shade and enjoying fruits. But in spite of that, وَلاَ يَأْتُونَ الْبَأْسَ إِلاَّ قَلِيلاً أَشِحَّةً عَلَيْكُمْ (they come not to the battle except a little, being miserly towards you.) i.e., `they are mean and have no love or mercy towards you.' As-Suddi said: أَشِحَّةً عَلَيْكُمْ (Being miserly towards you.) means, with the booty. فَإِذَا جَآءَ الْخَوْفُ رَأَيْتَهُمْ يَنظُرُونَ إِلَيْكَ تَدورُ أَعْيُنُهُمْ كَالَّذِى يُغْشَى عَلَيْهِ مِنَ الْمَوْتِ (Then when fear comes, you will see them looking to you, their eyes revolving like one over whom hovers death;) means, because of the intensity of their fear and terror; this is how afraid these cowards are of fighting. فَإِذَا ذَهَبَ الْخَوْفُ سَلَقُوكُم بِأَلْسِنَةٍ حِدَادٍ (but when the fear departs, they will smite you with sharp tongues,) means, when security is restored, they will speak eloquently and nicely, claiming that they were the bravest and most chivalrous of men, but they are lying. Ibn `Abbas, may Allah be pleased with him, said: سَلَقُوكُم (they will smite you) means, 'they will start to talk about you.\” Qatadah said: 'But when it comes to the booty, the most miserly of people and the worst to have to share the booty with are those who say, `Give us, give us, we were there with you,' but during battle they were the most cowardly and the most likely to fail to support the truth.\” They are miserly towards good, meaning that there is no goodness in them, for they have combined cowardice with lies and little good. Allah says: أوْلَـئِكَ لَمْ يُؤْمِنُواْ فَأَحْبَطَ اللَّهُ أَعْمَـلَهُمْ وَكَانَ ذَلِكَ عَلَى اللَّهِ يَسِيراً (Such have not believed. Therefore Allah makes their deeds fruitless and that is ever easy for Allah.)