Surah Al-Ma'idah 5:53

وَيَقُولُ ٱلَّذِينَ ءَامَنُوٓا۟ أَهَـٰٓؤُلَآءِ ٱلَّذِينَ أَقْسَمُوا۟ بِٱللَّهِ جَهْدَ أَيْمَـٰنِهِمْ ۙ إِنَّهُمْ لَمَعَكُمْ ۚ حَبِطَتْ أَعْمَـٰلُهُمْ فَأَصْبَحُوا۟ خَـٰسِرِينَ

And those who believe will say, "Are these the ones who swore by Allāh their strongest oaths that indeed they were with you?" Their deeds have become worthless, and they have become losers.

Translation: Saheeh International

Tafsir

And they say read wa-yaqūlu or just yaqūlu to indicate a new independent sentence; or wa-yaqūla as a supplement to what follows those who believe to one another in amazement when their secrets are revealed ‘Are these the ones who swore by God their most earnest oaths making the utmost effort thereby to swear that they …

Excerpt from Tafsir al-Jalalayn, commentary on 5:53, via Quran.com. The reader has the full commentary and 9 more tafsirs.