Surah Al-Baqarah — Ayah 11 (2:11)
وَإِذَا قِيلَ لَهُمۡ لَا تُفۡسِدُواْ فِي ٱلۡأَرۡضِ قَالُوٓاْ إِنَّمَا نَحۡنُ مُصۡلِحُونَ ١١
English translation (Saheeh International)
And when it is said to them, "Do not cause corruption on the earth," they say, "We are but reformers."
Brief commentary
When they are told not to ruin things on earth – through their rejection of the truth, their disobedience and so on – they deny doing so, claiming that they only correct things and put them right.