Hari Om Tat Sat — “Om Tat Sat,” the threefold name of the Absolute that Krishna gives in Chapter 17.

OM — the one syllable that is Brahman, which Krishna asks the yogi to utter at the last hour, in Chapter 8.

Aham Brahmasmi — “I am Brahman,” from the Upanishads, the soil the Gita grows from.