«العرفية العامة»
General customary permanent proposition.
This form expresses permanence during the time in which the subject has its titular description; necessity is not the direct qualification asserted. Its temporal condition resembles that of general conditional necessity: the subject must retain the named description.
«بالدوام كل كاتب متحرك الأصابع ما دام كاتبا»
Permanently, every writer moves their fingers as long as they are writing.
The example shows that “while writing” can appear in both forms, although bi-l-ḍarūrah and bi-l-dawām express different logical forces.