"[put|set] {one's} [mind] at (rest|ease)" Tanımı ve Anlamı

What is the origin of the idiom "put one's mind at rest" and when to use it?

The origin of the idiom "put one's mind at rest" can be traced to the concept of achieving mental calm and tranquility. The phrase draws upon the idea that when someone's mind is troubled or restless due to worries or anxieties, there is a need to address those concerns and provide reassurance.