The Tathāgatagarbha Sūtra is an influential and doctrinally striking Mahayana Buddhist scripture which treats of the existence of the "Tathagatagarbha" (Buddha-Matrix, Buddha-Embryo, Buddha-Essence, lit. "the womb of the thus-come-one") within all sentient creatures. The Buddha reveals how inside each person's being there exists a great Buddhic "treasure that is eternal and unchanging". This is no less than the indwelling Buddha himself.
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