85:7
وَهُمْ عَلَىٰ مَا يَفْعَلُونَ بِٱلْمُؤْمِنِينَ شُهُودٌ
wahum ʿalā mā yafʿalūna bil-mu'minīna shuhūdun
And they, to what they were doing against the believers, were witnesses.
— Saheeh International
to watch what they were doing to the believers.
— M. A. S. Abdel Haleem
And they witnessed what they were doing against the believers (i.e. burning them).
— Muhammad Muhsin Khan & Muhammad Taqi-ud-Din al-Hilali