Magna Carta 1297 - Article 29
The link is to the currently in force version of Magna Carta article 29 which says:
NO Freeman shall be taken or imprisoned, or be disseised of his Freehold, or Liberties, or free Customs, or be outlawed, or exiled, or any other wise destroyed; nor will We not pass upon him, nor [X1condemn him,] but by lawful judgment of his Peers, or by the Law of the Land. We will sell to no man, we will not deny or defer to any man either Justice or Right.
We should not "sell ... justice"
This is relevant to the Clarkson injunction.