The Upanishads Predate Buddha

[TTCUSM]

Buddha actually mentions several Upanishads in the Tevijja Sutta:

“Right and wrong paths, Reverend Gotama. There are so many kinds of Brahmins who teach different paths : the Addhariya, the Tittiriya, the Chandoka, the Chandava, the Brahmacariya Brahmins - do all these ways lead to union with Brahma? Just as if there were near a town or village many different paths - do all these come together at that place? And likewise, do the ways of the various Brahmins ... lead the one who follows them to union with Brahma?”

I'm guessing "Addhariya" means "Aitareya", "Tittiriya" means "Taittiriya", and "Chandoka" means "Chandogya". All three are the names of primary (mukhya) Upanishads.

 

[Riverwolf]

You are aware that, because the Buddha never wrote anything down, and none of his teachings were written down until 100 years after his death, there isn't much agreement as to what Buddhist teachings are actually his, save for the Four Noble Truths?

Sure, it's possible that he said that, but it's equally possible that these are someone else's words being attributed to the Buddha.

 

[kaisersose]

Buddha actually mentions several Upanishads in the Tevijja Sutta:

I'm guessing "Addhariya" means "Aitareya", "Tittiriya" means "Taittiriya", and "Chandoka" means "Chandogya". All three are the names of primary (mukhya) Upanishads.

The Tevijja Suta is part of the Pali canon which is usually attributed to the Buddha himself.

Some Upanishads like the Chandogya and the Brihadaranyaka are definitely older than the Buddha. No reason why the other above mentioned Upanishads are not older too. Vedanta generally agree on ten core Upanishads and chances are all ten are older than the Buddha.

The Muktika Upanishad lists 108 Upanishads (including itself). Outside this 108, we also have Tappani Upanishads, etc., which are no older than the 14th century.