Because a being possessed "karmic delusions", Zhaozhou Congshen gives an answer of "mu" when asked if a dog has this concept in a Zen koan.
A sutra that explicates this concept features a disciple named Manjusri being asked "Why do people not dig in trees for gold?" and "Why do people not churn water into milk?", and centers on the serial killer Angulimala. Seven arguments for why this doctrine applies to trees and plants were summarized by the Chinese scholar Chujin in the Kanko Ruiju. This doctrine names a "treatise" by Vasubandhu, who argued that the objective of Chan contemplation is not rebirth in the Pure Land, but the understanding of this concept. This concept, which is named for the word for "seed" or "embryo", was extended to apply to non-living things by Dogen. Because a being possessed "karmic delusions", Zhaozhou Congshen gives an answer of "mu" when asked if a dog has this concept in a Zen koan. For 10 points, name this fundamental quality of living things, which allows them to reach Enlightenment.
A sutra that explicates this concept features a disciple named Manjusri being asked "Why do people not dig in trees for gold?"
Buddha-nature [accept answers indicating all things can be a Buddha; accept Buddha-dhatu or Tathagatagarbha]