Article 57 of the Shadow Proclamation

Article 57 of the Shadow Proclamation was a subsection of the Shadow Proclamation. This article prohibited the destruction of a fully established Level 5 planet such as the Earth if no hostile actions were implemented by the planet.

The Eleventh Doctor ordered the Atraxi to return to Earth after they decided the destruction of the planet in order to kill Prisoner Zero referring to this article. (TV: The Eleventh Hour)

The Yeamorg Warriors were collected by the Shadow Proclamation for breach of Article 57. (COMIC: Finders Keepers)

Published during the Last Great Time War, the Time Lords' Dalek Combat Training Manual acknowledged that most of the space-time events of the Doctor's future confrontations with the Daleks in the post-Time War universe had been restricted under Article 57 of the Shadow Proclamation (Subsection 12: Jurisdiction of the Celestial Intervention Agency), but that viewing of these data extracts was now to be considered essential background information for all combat personnel. (PROSE: Dalek Combat Training Manual)

Behind the scenes
Subsection 12 of this article (Juristiction of the Celestial Intervention Agency) referred to the restriction of access to details concerning certain Space/Time events, some of which included the actions of the Doctor. (REF: TARDIS Type 40 Instruction Manual)