I read somewhere (don't remember where) that the Buddha mentioned, that he has taught only a fraction of what he could discern with his eye of wisdom (about existence). Does anyone know which Sutra describes this?

  • My question is identical to the one you have linked. Although not sure if I should delete this one, or just leave it as is.
    – Parag
    Feb 12 '16 at 5:27

That sutta (or, at least, one of those suttas) is sometimes summarized as "a handful of leaves".

Simsapa Sutta: The Simsapa Leaves

"In the same way, monks, those things that I have known with direct knowledge but have not taught are far more numerous [than what I have taught]. And why haven't I taught them? Because they are not connected with the goal, etc.

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