Surah Al-A'raf (The Heights), Verse 129

قَالُوْۤا اُوْذِیْنَا مِنْ قَبْلِ اَنْ تَاْتِیَنَا وَمِنْ بَعْدِ مَا جِئْتَنَا قَالَ عَسٰی رَبُّكُمْ اَنْ یُّهْلِكَ عَدُوَّكُمْ وَیَسْتَخْلِفَكُمْ فِی الْاَرْضِ فَیَنْظُرَ كَیْفَ تَعْمَلُوْنَ 

Qaaloo oozeenaa min qabli an ta'tiyanaa wa mim ba'di maa ji'tanaa; qaala 'asaa Rabbukum ai yuhlika 'aduwwakum wa yastakhli fakum fil ardi fayanzura kaifa ta'maloon

“They said: "We have had (nothing but) trouble, both before and after thou camest to us." He said: "It may be that your Lord will destroy your enemy and make you inheritors in the earth; that so He may try you by your deeds."”

Quran 7:129 (Yusuf Ali Translation)