﴿ وَإِذْ فَرَقْنَا بِكُمُ ٱلْبَحْرَ فَأَنجَيْنَٰكُمْ وَأَغْرَقْنَآ ءَالَ فِرْعَوْنَ وَأَنتُمْ تَنظُرُونَ ﴾

“and when We cleft the sea before you, and thus saved you and caused Pharaoh's people to drown before your very eyes;”

Then Allah mentioned the favour of saving them from drowning and the drowning of Pharaoh and his folk, saying (And when We brought you through) split (the sea and rescued you) from drowning,(and drowned the folk of Pharaoh) and his folk (in your sight) while you were looking at them, three days later.