1. have no business - Verb
2. have no business - Phrase
To not have a right or privilege to do something.
To not have a right or privilege to be in a certain place.
Source: en.wiktionary.orgI have a healthy appetite for solitude. If you don't, you have no business being a writer. Will Self
The Kingdom of Saudi Arabia is a Muslim country. The Kingdom of Saudi Arabia is not a slave of colonial forces like you and others. ... Do not indulge yourself in things you have no business with! The lie is before you and the grave is in front of you! Abdullah of Saudi Arabia
Young lawyers attend the courts, not because they have business there, but because they have no business. Washington Irving
Eggs have no business dancing with stones. Haitian Proverb
Cows have no business in horseplay. Jamaican Proverb
Eggs have no business dancing with stones. Italian Proverb