The Ants
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."
Nearby ayahs help place verse 27:47 in sequence and meaning.
وَلَقَدْ أَرْسَلْنَآ إِلَىٰ ثَمُودَ أَخَاهُمْ صَـٰلِحًا أَنِ ٱعْبُدُوا۟ ٱللَّهَ فَإِذَا هُمْ فَرِيقَانِ يَخْتَصِمُونَ
And We had certainly sent to Thamud their brother Salih, [saying], "Worship Allah," and at once they were two parties conflicting.
قَالَ يَـٰقَوْمِ لِمَ تَسْتَعْجِلُونَ بِٱلسَّيِّئَةِ قَبْلَ ٱلْحَسَنَةِ ۖ لَوْلَا تَسْتَغْفِرُونَ ٱللَّهَ لَعَلَّكُمْ تُرْحَمُونَ
He said, "O my people, why are you impatient for evil instead of good? Why do you not seek forgiveness of Allah that you may receive mercy?"
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].
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.' "