be null and void

See: perish
References in classic literature ?
But in such a case, if it should ever happen, the treaty so obtained from us would, like all other fraudulent contracts, be null and void by the law of nations.
In the event the HR policy formulated by the employer is not in accordance with Employment Law, then such HR policy shall be null and void, if such HR policy is not more beneficial to the employee.
Any contradicting stipulation shall be null and void."
A complaint has been made that Coun Wilson's nomination should be null and void, following a claim that he was employed by the County Council at the time his nomination was submitted.