26:157

فَعَقَرُوهَا فَأَصْبَحُوا نَادِمِينَ

Transliteration:

FaAAaqarooha faasbahoo nadimeena

Word by Word:

But they hamstrung her, then they became regretful.

Translations:

But they cruelly slaughtered her - and then they had cause to regret it:

But they ham-strung her: then did they become full of regrets.

But they hamstrung her, and then were penitent.

But the hamstrung her, then regretted,

But they hamstrung her and so became regretful.