My great grandmother used to chant Brahmopanishad. Its wordings were: Kalatrayaa bodhitam brahma; Sarvakaala bodhitam brahma..."Could someone tell me where I can find this upanishad?
Here is the English translation of the Brahmopanishad from Krishna Yajur Veda.
It starts with Shaunka questioning Piplada Rishi.
. Om ! Shaunaka, householder of fame, once asked Bhagavan Pippalada of Angira’s family: In this body, the divine city of Brahman, installed, how do they create ? Whose glory does this constitute ? Who is he who became all this glory ?