Indeed, Pharaoh exalted himself in the land and made its people into factions, oppressing a sector among them, slaughtering their [newborn] sons and keeping their females alive. Indeed, he was of the corrupters.
English Transliteration
Inna firAAawna AAala fee alardi wajaAAala ahlaha shiyaAAan yastadAAifu taifatan minhum yuthabbihu abnaahum wayastahyee nisaahum innahu kana mina almufsideena
Tafsir of Verse 4
Now Pharaoh had exalted himself in the land and had divided its inhabitants into sects, abasing one party of them, slaughtering their sons, and sparing their women; for he was of the workers of corruption.
Truly Pharaoh elated himself in the land and broke up its people into sections, depressing a small group among them: their sons he slew, but he kept alive their females: for he was indeed a maker of mischief.