(Thwaha) 20 : 61
قَالَ لَهُمْ مُوسَىٰ وَيْلَكُمْ لَا تَفْتَرُوا عَلَى اللَّهِ كَذِبًا فَيُسْحِتَكُمْ بِعَذَابٍ ۖ وَقَدْ خَابَ مَنِ افْتَرَىٰ
Moses said to them: "Woe to you! Don’t forge lie against Lord Allah; then He will destroy you with a punishment; and surely he who forges lies will be defeated".
It is told in verses 91: 9-10 that the one who purifies the soul is succeeded and the one who failed to purify is defeated. See explanation 4: 51-52; 7: 37 and 10: 17.