When is the DoD first applied? During sprint planning or daily scrum?

Hi, I have a question regarding the Definition of Done (DoD). I understand that the DoD is an integral part of a user story. Any user story can only be considered as "shippable" if its DoD is fulfilled by the team. My question: When is the DoD first applied in a user story? During the sprint planning session or during the daily Scrum?

Posted By - Davis