﴿ وَإِذْ نَجَّيْنَٰكُم مِّنْ ءَالِ فِرْعَوْنَ يَسُومُونَكُمْ سُوٓءَ ٱلْعَذَابِ يُذَبِّحُونَ أَبْنَآءَكُمْ وَيَسْتَحْيُونَ نِسَآءَكُمْ ۚ وَفِى ذَٰلِكُم بَلَآءٌۭ مِّن رَّبِّكُمْ عَظِيمٌۭ ﴾

“And [remember the time] when We saved you from Pharaoh's people, who afflicted you with cruel suffering, slaughtering your sons and sparing [only] your women - which was an awesome trial from your Sustainer;”

Please check ayah 2:50 for complete tafsir.