The atman is as tiny as that one, by ten thousandth of the tip of a human head. The anathema doctrine meticulously shows you whatever we consider to be ourselves is not our such. In the physical body, there's no omney and our feelings,. There's no atman nor emotions. There's no oman other than that. All so it is dateness.
Swami Sarvapriyananda teaches the Katha Upanishad, one of India's most revered texts which is also a part of the Vedas. It is a collection of philosophical poems representing a conversation between the sage Naciketas and Yama (god of death). They discuss the nature of Atman, Brahman and Moksha(liberation).