Surah Al-A'raf (The Heights), Verse 188

قُلْ لَّاۤ اَمْلِكُ لِنَفْسِیْ نَفْعًا وَّلَا ضَرًّا اِلَّا مَا شَآءَ اللّٰهُ وَلَوْ كُنْتُ اَعْلَمُ الْغَیْبَ لَاسْتَكْثَرْتُ مِنَ الْخَیْرِ وَمَا مَسَّنِیَ السُّوْٓءُ اِنْ اَنَا اِلَّا نَذِیْرٌ وَّبَشِیْرٌ لِّقَوْمٍ یُّؤْمِنُوْنَ 

Qul laaa amliku linafsee naf'anw wa laa darran illaa maa shaaa'al laah; wa law kuntu a'lamul ghaiba lastaksartu minal khairi wa maa massaniyas soo'; in ana illaa nazeerunw wa basheerul liqawminy yu'minoon

“Say: "I have no power over any good or harm to myself except as Allah willeth. If I had knowledge of the unseen, I should have multiplied all good, and no evil should have touched me: I am but a warner, and a bringer of glad tidings to those who have faith."”

Quran 7:188 (Yusuf Ali Translation)