وَزَعَمُوا أَنَّ صِفَاتِهِ عَيْنُ ذَاتِهِ
They held that His attributes are identical with His essence.
In the reported interpretation, predicates such as knowing and powerful are used, but the reality of distinct eternal attributes subsisting in the essence is not accepted in the same way. Some explanations make the predicates depend on relations or conceptual considerations of the essence.
The motivating concern is a plurality of eternal realities. The Sunni reply is that acknowledging diverse attributes and meanings does not automatically amount to acknowledging several independently existing divine essences or gods.