433. Shantih. Repeated as here, a formal ending to an Upanishad. 'The Peace which passeth understanding' is a feeble translation of the conduct of this word.

from T.S. Eliot – Notes on "The Waste Land" on Rap Genius

Meaning

The actual formal ending to a Upanishad is

Om, Shantih, Shantih, Shantih.

No small amount of critical debate has arisen over whether Eliot removes the “Om” to make the three Shantihs antithetic to their supposed purpose-

Or whether his understanding of the Upanishads and Sandsrit did not encompass this formal structure when he wrote the poem and the Shantihs are to be read as his note states he intended

To help improve the meaning of these lyrics, visit “Notes on "The Waste Land"” by T.S. Eliot and leave a comment on the lyrics box