Quran 4, An-Nisa (the Women)

4:107And plead not on behalf of (people) who deceive themselves. Lo! Allah loveth not one who is treacherous and sinful.

وَلَا تُجَادِلْ عَنِ الَّذِينَ يَخْتَانُونَ أَنْفُسَهُمْ إِنَّ اللَّهَ لَا يُحِبُّ مَنْ كَانَ خَوَّانًا أَثِيمًا