Surah Al-A'raf (The Heights), Verse 141

وَاِذْ اَنْجَیْنٰكُمْ مِّنْ اٰلِ فِرْعَوْنَ یَسُوْمُوْنَكُمْ سُوْٓءَ الْعَذَابِ یُقَتِّلُوْنَ اَبْنَآءَكُمْ وَیَسْتَحْیُوْنَ نِسَآءَكُمْ وَفِیْ ذٰلِكُمْ بَلَآءٌ مِّنْ رَّبِّكُمْ عَظِیْمٌ 

Wa iz anjainaakum min Aali Fir'awna yasoomoo nakum sooo'al 'azaab, yuqattiloona abnaaa'akum wa yastahyoona nisaaa'akum; wa fee zaalikum balaaa'um mir Rabbikum 'azeem

“And remember We rescued you from Pharaoh's people, who afflicted you with the worst of penalties, who slew your male children and saved alive your females: in that was a momentous trial from your Lord.”

Quran 7:141 (Yusuf Ali Translation)