have no business doing something/to do something
have no business (doing something)
To have no legitimate reason, experience, or authority to do something. Mom, you had no business eavesdropping on my phone call like that! He has no business running this meeting—he has no idea what this project entails.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.
have no business doing something/to do somethinghave no right to do something: You have no business being here.
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