Like a bird flying away to another place, and like a sparrow that hurries away freely, so also a curse uttered against someone without cause will pass away
Other versions
King James Version
As the bird by wandering, as the swallow by flying, so the curse causeless shall not come.English Standard Version
Like a sparrow in its flitting, like a swallow in its flying, a curse that is causeless does not alight.New International Version
Like a fluttering sparrow or a darting swallow, an undeserved curse does not come to rest.