﴿فَلَا تَجْعَلُوا لِلَّهِ أَنْدَادًا وَأَنْتُمْ تَعْلَمُونَ﴾
Do not set up equals to Allah when you know. (Al-Baqarah 2:22)
In wa-antum taʿlamūna, antum is the nominal subject, while taʿlamūna is a verbal clause functioning as its predicate. The complete construction is thus a nominal circumstantial clause, introduced by wāw. The knowledge attributed to the audience heightens the force of the prohibition by presenting their knowledge as a relevant concurrent circumstance.