Lā tajʿalū is a prohibition with the plural subject contained in its verb. The following wa-antum taʿlamūna is a nominal circumstantial sentence: antum identifies the addressees, and the plural subject of taʿlamūna refers to the same people.
The circumstantial wāw and the referential pronoun work together but are not interchangeable. Wāw relates the clause to the prior act, while the pronoun identifies whose state is being described.
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Wāw with Nominal Circumstantial Clauses: Omission, Inclusion and Disputed Cases
Lā tajʿalū is a prohibition with the plural subject contained in its verb. The following wa-antum taʿlamūna is a nominal circumstantial sentence: antum identifies the addressees, and the plural subject of taʿlamūna refers to the same people.
The circumstantial wāw and the referential pronoun work together but are not interchangeable. Wāw relates the clause to the prior act, while the pronoun identifies whose state is being described.