Surah An-Naml, ayah 49

قَالُواْ تَقَاسَمُواْ بِٱللَّهِ لَنُبَيِّتَنَّهُۥ وَأَهۡلَهُۥ ثُمَّ لَنَقُولَنَّ لِوَلِيِّهِۦ مَا شَهِدۡنَا مَهۡلِكَ أَهۡلِهِۦ وَإِنَّا لَصَٰدِقُونَ ٤٩

Qālū taqāsamū billāhi lanubayyitannahū wa ahlahū thumma lanaqūlanna liwaliyyihī mā shahidnā mahlika ahlihī wa innā lasādiqūn

They said, "Take a mutual oath by Allāh that we will kill him by night, he and his family. Then we will say to his executor,¹⁰⁸⁰ 'We did not witness the destruction of his family, and indeed, we are truthful.'"