﴿ 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;”

(And (remember) when We did deliver you from Pharaoh's folk), from Pharaoh and his people, (who were afflicting you with dreadful torment), and here Allah mentions the torment He sent on them: (slaying your sons) in their tender years (and sparing), using (your women) who were of age: (That was a tremendous trial from your Lord), a tremendous calamity from your Lord; and it is also said this means: a tremendous blessing.