وَيَقُولُ الَّذِينَ آمَنُواْ أَهَـؤُلاء الَّذِينَ أَقْسَمُواْ بِاللّهِ جَهْدَ أَيْمَانِهِمْ إِنَّهُمْ لَمَعَكُمْ حَبِطَتْ أَعْمَالُهُمْ فَأَصْبَحُواْ خَاسِرِينَ
[5:53]
And those who believe will say: Are these they who swore by Allah with the most forcible of their oaths that they were most surely with you? Their deeds shall go for nothing, so they shall become losers.
And those who believe will say: "Are these the men who swore their strongest oaths by Allah, that they were with you?" All that they do will be in vain, and they will fall into (nothing but) ruin.
Then will the believers say (unto the people of the Scripture): are these they who swore by Allah their most binding oaths that they were surely with you? Their works have failed, and they have become the losers.