This is the 3163rd most frequent German word.
dürens
It seems you may have a typo or misinterpretation, as "dürens" is not a standard German word. Could you clarify or check the spelling?
The word "muss" (must) completes the phrase, showing obligation.
Ich muss die Hausaufgaben machens, bevor ich ins Kino gehen kann.
I have to do the homework before I can go to the cinema.
Here, "dürens" indicates discussing a topic, adjusted to agree with the context.
Das dürens wir später besprechen.
We'll discuss that later.
In this sentence, "dürens" forms the action requiring explanation and adds time context.