What is Ayam Atma Brahma?

Ayam Atma Brahma is a Mahāvākya, which is found in the Mundaka Upanishad of the Atharvaveda.Other Mahāvākyas phrases are "Aham Brahman Asmi", "Prajnanam Brahma" and "Tat Tvam As".

Like other Mahāvākyas, it also explains the unity of Brahman and Atman, which is the basic principle of Advaita Vedanta. According to the Guru Gita, "Ayam Atma Brahma" is a statement of practice.