Al-A'raf 7:141

Wa-ith anjaynakum min alifirAAawna yasoomoonakum soo-a alAAathabi yuqattiloona abnaakumwayastahyoona nisaakum wafee thalikum balaonmin rabbikum AAatheem

And [recall, O Children of Israel], when We saved you from the people of Pharaoh, [who were] afflicting you with the worst torment - killing your sons and keeping your women alive. And in that was a great trial from your Lord.

(Remember) when We delivered you from the people of Pharaoh who inflicted grievous torment upon you, slaughtered your sons and left your women alive. In all that there was a great trial from your Lord.