وَإِذ نَجَّيناكُم مِن آلِ فِرعَونَ يَسومونَكُم سوءَ العَذابِ يُذَبِّحونَ أَبناءَكُم وَيَستَحيونَ نِساءَكُم ۚ وَفي ذٰلِكُم بَلاءٌ مِن رَبِّكُم عَظيمٌ

Recall when We saved you from Pharaoh’s people, who inflicted upon you grievous suffering, slaughtering your sons while sparing your women. In that was a severe trial from your Lord.