Quran 27:50 — The Ant (Al-Naml)

They plotted and schemed, but we also plotted and schemed, while they did not perceive.

[27:49] They said, "Let us swear by GOD that we kill him and his people, then tell his tribe, 'We know nothing about their death. We are truthful.' "

[27:51] Note the consequences of their plotting; we annihilated them and all their people.