Traditional Anātman in Sanskrit means that "which is different from atman" or "non-self".
[1] In Hinduism, the former definition is found in some texts, while in Buddhism, anātman or anattā means non-self.
[2] According to Śrī Candraśekhara Bhāratī of Śringeri,[3] Shankara does not use the term anātman to mean non-soul or anti-soul.
[7] Buddhists believe that there is no permanent underlying substance called self or soul (Ātman) in human beings.
"[11] Nāgārjuna's explication of the theory of anātman as śūnyatā (emptiness) in the Mūlamadhyamakakārikā was part of his restatement of the Buddha's Four Noble Truths as well as a rejection of the philosophies of the early Buddhist schools of the Sarvastivadins and the Sautrāntika.