فَكَفَىٰ بِٱللَّهِ شَهِيدًۢا بَيْنَنَا وَبَيْنَكُمْ إِن كُنَّا عَنْ عِبَادَتِكُمْ لَغَٰفِلِينَ
Therefore Allah is sufficient as a witness between us and you that we were quite unaware of your serving (us).