with (good) reason
Having a sound, justifiable cause or purpose. Yes, it was I who denied the defendant's application, but with reason—none of his supporting documentation was from within the last six months, as stipulated on our department's website. Officers may only search a person's private belongings or possessions with good reason that can be proven to the courts.
with reason
For a ground or cause, justifiably, as in He turned down their offer, but with reason-he didn't want to move his family to a big city . [c. 1600]
with reason
With good cause; justifiably.