42 : 41
وَلَمَنِ ٱنتَصَرَ بَعۡدَ ظُلۡمِهِۦ فَأُوْلَٰٓئِكَ مَا عَلَيۡهِم مِّن سَبِيلٍ
And whoever retaliates after having been wronged - those have not upon them any cause [for blame].
Ayah 41 of الشُّورى (42 : 41). This page carries the verse in the Uthmani script with a translation of its meaning, at a stable URL that can be cited on its own.
وَلَمَنِ ٱنتَصَرَ بَعۡدَ ظُلۡمِهِۦ فَأُوْلَٰٓئِكَ مَا عَلَيۡهِم مِّن سَبِيلٍ
And whoever retaliates after having been wronged - those have not upon them any cause [for blame].