The Ants
قَالُوا۟ تَقَاسَمُوا۟ بِٱللَّهِ لَنُبَيِّتَنَّهُۥ وَأَهْلَهُۥ ثُمَّ لَنَقُولَنَّ لِوَلِيِّهِۦ مَا شَهِدْنَا مَهْلِكَ أَهْلِهِۦ وَإِنَّا لَصَـٰدِقُونَ
They said, "Take a mutual oath by Allah that we will kill him by night, he and his family. Then we will say to his executor, 'We did not witness the destruction of his family, and indeed, we are truthful.' "
Nearby ayahs help place verse 27:49 in sequence and meaning.
قَالُوا۟ ٱطَّيَّرْنَا بِكَ وَبِمَن مَّعَكَ ۚ قَالَ طَـٰٓئِرُكُمْ عِندَ ٱللَّهِ ۖ بَلْ أَنتُمْ قَوْمٌ تُفْتَنُونَ
They said, "We consider you a bad omen, you and those with you." He said, "Your omen is with Allah. Rather, you are a people being tested."
وَكَانَ فِى ٱلْمَدِينَةِ تِسْعَةُ رَهْطٍ يُفْسِدُونَ فِى ٱلْأَرْضِ وَلَا يُصْلِحُونَ
And there were in the city nine family heads causing corruption in the land and not amending [its affairs].
وَمَكَرُوا۟ مَكْرًا وَمَكَرْنَا مَكْرًا وَهُمْ لَا يَشْعُرُونَ
And they planned a plan, and We planned a plan, while they perceived not.
فَٱنظُرْ كَيْفَ كَانَ عَـٰقِبَةُ مَكْرِهِمْ أَنَّا دَمَّرْنَـٰهُمْ وَقَوْمَهُمْ أَجْمَعِينَ
Then look how was the outcome of their plan - that We destroyed them and their people, all.