Sentence examples for a cardinal rule from inspiring English sources

"Police on my side broke a cardinal rule.

It has violated a cardinal rule of bookmaking, however.

But I regularly break a cardinal rule of healthy living: I skip breakfast.

There's a cardinal rule: If it's not broken, don't try to fix it.

"That's when I came up with a cardinal rule," he said.

A cardinal rule here on the bottom is to keep your head down.

A cardinal rule is never to set a rigid time frame in advance.

A cardinal rule in toxicology is "the dose makes the poison".

It is a cardinal rule of Islam that no one should go to the grave unclean.

A cardinal rule of social research is that the plural of anecdote is not "data".

It was a cardinal rule in MI9 that they never used Red Cross parcels.