Hi Shri,
You cannot achieve it in this way. You can use eXtensible Data Security (XDS) where you can restrict database actions based on table contents. It would be possible to create a query where you define a range on the validated status. Then create a security policy where you restrict access with this query to delete. One security role will get the restricted policy. Another not.
When a user with the restriction tries to delete, it will raise an error stating it is restricted.
