﴿ وَإِذْ قَتَلْتُمْ نَفْسًۭا فَٱدَّٰرَْٰٔتُمْ فِيهَا ۖ وَٱللَّهُ مُخْرِجٌۭ مَّا كُنتُمْ تَكْتُمُونَ ﴾

“For, O children of Israel, because you had slain a human being and then cast the blame for this [crime] upon one another -although God will bring to light what you would conceals”

And when you killed a living soul and disputed thereon iddāra’tum the tā’ of the root-form itdāra’tum has been assimilated with the dāl — and God disclosed what you were hiding this is a parenthetical statement; the story begins here with wa-idh qataltum nafsan ‘and when you killed a soul’… and continues in the following