And when he brought them the truth from Us, they said, "Kill the sons of those who have believed with him and keep their women alive." But the plan of the disbelievers is not except in error.
English Transliteration
Falamma jaahum bialhaqqi min AAindina qaloo oqtuloo abnaa allatheena amanoo maAAahu waistahyoo nisaahum wama kaydu alkafireena illa fee dalalin
Tafsir of Verse 25
And when he brought them the truth from Us, they said, 'Slay the sons of those who believe with him, and spare their women.' But the guile of the unbelievers is ever in error.
Now, when he came to them in Truth, from Us, they said, "Slay the sons of those who believe with him, and keep alive their females," but the plots of Unbelievers (end) in nothing but errors (and delusions)!...