An-Nisa' - 4:107

وَلاَ تُجَادِلْ عَنِ الَّذِينَ يَخْتَانُونَ أَنفُسَهُمْ إِنَّ اللّهَ لاَ يُحِبُّ مَن كَانَ خَوَّانًا أَثِيمًا
[4:107]
And do not plead on behalf of those who act unfaithfully to their souls; surely Allah does not love him who is treacherous, sinful;
Contend not on behalf of such as betray their own souls; for Allah loveth not one given to perfidy and crime:
And plead not on behalf of (people) who deceive themselves. Lo! Allah loveth not one who is treacherous and sinful.