Nature of mind (Buddhism) in the context of Dignaga

In Buddhist philosophy and soteriology, Buddha-nature (Chinese: fóxìng 佛性, Japanese: busshō 佛性, Vietnamese: Phật tính, Sanskrit: buddhatā, buddha-svabhāva or tathāgatagarbha तथागतगर्भ) is the innate potential for all sentient beings to become a Buddha or the fact that all sentient beings already have a pure Buddha-essence within themselves. "Buddha-nature" is the common English translation for several related Mahāyāna Buddhist terms, most notably tathāgatagarbha (तथागतगर्भ) and buddhadhātu, but also sugatagarbha, and buddhagarbha. Tathāgatagarbha can mean "the womb" or "embryo" (garbha) of the "thus-gone one" (tathāgata), and can also mean "containing a tathāgata". Buddhadhātu can mean "buddha-element", "buddha-realm", or "buddha-substrate".

Buddha-nature has a wide range of (sometimes conflicting) meanings in Indian Buddhism and later in East Asian and Tibetan Buddhist literature. Broadly speaking, it refers to the belief that the luminous mind, "the natural and true state of the mind", which is pure (visuddhi) mind undefiled by afflictions, is inherently present in every sentient being, and is eternal and unchanging. It will shine forth when it is cleansed of the defilements, that is, when the nature of mind is recognized for what it is.