1
general::
Meet a required standard, as in That yard cleanup won't pass muster with Mom. This expression originally meant "to undergo a military review without censure," muster referring to an assembling of troops for inspection or a similar purpose. [Late 1500s]
American Heritage Idioms
2
general::
Phrase(s): pass muster
Fig. to measure up to the required standards. • I tried, but my efforts didn’t pass muster. • If you don’t wear a jacket and tie, you won’t pass muster at that fancy restaurant. They won’t let you in.
McGrawhill's American Idioms And Phrasal Verbs