lay something to rest
US /leɪ ˈsʌm.θɪŋ tuː rɛst/
UK /leɪ ˈsʌm.θɪŋ tuː rɛst/

1.
acabar con, dar carpetazo a
to put an end to something, especially a rumor, doubt, or problem
:
•
The company issued a statement to lay the rumors to rest.
La empresa emitió un comunicado para acabar con los rumores.
•
We need to discuss this issue and finally lay it to rest.
Necesitamos discutir este tema y finalmente darle carpetazo.