While the Veda Samhitas are the recognised छान्दोग्योपनिषत् ॥ अथ छान्दोग्योपनिषत् ॥ ॐ आप्यायन्तु Chandogya Upanisad Dialogue between Pravahana and two Brahmin s on the High Chant High Chant as Space Story of Usasti: High Chant identified with The Chhandogya Upanish