An-Naml • EN-TAFSIR-IBN-ABBAS
﴿ قَالُوا۟ تَقَاسَمُوا۟ بِٱللَّهِ لَنُبَيِّتَنَّهُۥ وَأَهْلَهُۥ ثُمَّ لَنَقُولَنَّ لِوَلِيِّهِۦ مَا شَهِدْنَا مَهْلِكَ أَهْلِهِۦ وَإِنَّا لَصَٰدِقُونَ ﴾
“[and] after having bound one another by an oath in God’s name, they said: “Indeed, we shall suddenly fall upon him and his household by night [and slay them all]; and then we shall boldly say to his next of kin, ‘We did not witness the destruction of his household - and, behold, we are indeed men of truth!’””
(They said: Swear one to another by Allah that we verily will attack him and his household by night) and kill them all, (and afterward we will surely say unto his friend) to his inheritors and relatives: (We witnessed not the destruction of his household) we did not witness the killing of Salih and his household. (And lo! we are truth tellers) they will believe us and no one will reject what we say.