85:7

وَهُمْ عَلَىٰ مَا يَفْعَلُونَ بِالْمُؤْمِنِينَ شُهُودٌ

Transliteration:

Wahum AAala ma yafAAaloona bialmu/mineena shuhoodun

Word by Word:

And they over what they were doing to the believers witnesses.

Translations:

fully conscious of what they are doing to the believers,

And they witnessed (all) that they were doing against the Believers.

And were themselves the witnesses of what they did to the believers.

And they are witnesses of what they do with the believers.

And they, to what they were doing against the believers, were witnesses.