Ar-Ra'd - 13:27

وَيَقُولُ الَّذِينَ كَفَرُواْ لَوْلاَ أُنزِلَ عَلَيْهِ آيَةٌ مِّن رَّبِّهِ قُلْ إِنَّ اللّهَ يُضِلُّ مَن يَشَاء وَيَهْدِي إِلَيْهِ مَنْ أَنَابَ
[13:27]
And those who disbelieve say: Why is not a sign sent down upon him by his Lord? Say: Surely Allah makes him who will go astray, and guides to Himself those who turn (to Him).
The Unbelievers say: "Why is not a sign sent down to him from his Lord?" Say: "Truly Allah leaveth, to stray, whom He will; But He guideth to Himself those who turn to Him in penitence,-
Those who disbelieve say: If only a portent were sent down upon him from his Lord! Say: Lo! Allah sendeth whom He will astray, and guideth unto Himself all who turn (unto Him),