Sometimes what is denied is the occurrence of an act or property across all relevant items, not the existence of the act in every possible sense. Thus ‘I did not take all the dirhams’ can coexist with taking some of them.
To identify the restriction, ask whether kull modifies an agent, an object, or the scope of the action or attribute itself.
Otherwise one may wrongly conflate ‘nobody performed the act’ with ‘the act was not performed by every member’, which are distinct assertions.