What is the liability upon the judge if the two validators (Muzakkiyyin) are later discovered to be morally corrupt (Fasiq)?

Primary text

If it is established that the validators themselves were morally corrupt, the liability falls upon the judge. This is due to his negligence (Tafreet) in accepting the testimony of a morally corrupt person without seeking proper validation (Tazkiyah) or investigation (Bahth). This liability is similar to when a judge accepts the testimony of Zina witnesses without validation and they are later discovered to be corrupt.