﴿ فَذَٰلِكُمُ ٱللَّهُ رَبُّكُمُ ٱلْحَقُّ ۖ فَمَاذَا بَعْدَ ٱلْحَقِّ إِلَّا ٱلضَّلَٰلُ ۖ فَأَنَّىٰ تُصْرَفُونَ ﴾

“seeing that He is God, your Sustainer, the Ultimate Truth? For, after the truth [has been forsaken], what is there [left] but error? How, then, can you lose sight of the truth?"”

Please check ayah 10:33 for complete tafsir.