It's not ungrammatical to elide an 'oH which refers to ngoDvam. However, you never established the antecedent in the first place.
What you're really doing is bIvoqbe' 'ej muSuj 'e'. This is, of course, not allowed.
You also posted something even more full of multiple negatives that I think parses out to “you can say it but it’s illegal.” Are you making some sort of a distinction between “ungrammatical” and “against the rules”?