 kulayarāja, "the King of the Dwelling Place [of Ultimate Bodhicitta]), a text belonging to the Mind Class (Tib., sems sde) of the Ati Yoga Inner Tantras.As scholar Jacob Dalton summarizes,

Longchenpa combined the teachings of the Vima Nyingtig lineage with those of the Khandro Nyingtig, thus preparing the ground for the fully unified system of teachings that became known as the Longchen Nyingthig (by Jigme Lingpa).A (Seven Treasuries)