I'm interested in the meaning of Samādhi in the last line of the quoted
paragraph from the Upanisa sutta [SN 12.23]
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Yampissa taṃ, bhikkhave, khayasmiṃ khayeñāṇaṃ, tampi saupanisaṃ vadāmi,
no anupanisaṃ. Kā ca, bhikkhave, khayeñāṇassa upanisā? ‘Vimuttī’tissa
vacanīyaṃ. Vimuttimpāhaṃ, bhikkhave, saupanisaṃ vadāmi, no anupanisaṃ.
Kā ca, bhikkhave, vimuttiyā upanisā? ‘Virāgo’tissa vacanīyaṃ.
Virāgampāhaṃ, bhikkhave, saupanisaṃ vadāmi, no anupanisaṃ. Kā ca,
bhikkhave, virāgassa upanisā? ‘Nibbidā’tissa vacanīyaṃ. Nibbidampāhaṃ,
bhikkhave, saupanisaṃ vadāmi, no anupanisaṃ. Kā ca, bhikkhave, nibbidāya
upanisā? ‘Yathābhūtañāṇadassanan’tissa vacanīyaṃ.
Yathābhūtañāṇadassanampāhaṃ, bhikkhave, saupanisaṃ vadāmi, no
anupanisaṃ. Kā ca, bhikkhave, yathābhūtañāṇadassanassa upanisā?
‘Samādhī’tissa vacanīyaṃ. Samādhimpāhaṃ, bhikkhave, saupanisaṃ vadāmi,
no anupanisaṃ.
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english translation of paragraph by B.Bodhi
"The knowledge of destruction with respect to destruction has a
supporting condition, I say, it does not lack a supporting condition.
And what is the supporting condition for the knowledge of destruction?
'Emancipation' should be the reply.
"Emancipation, monks, also has a supporting condition, I say, it does
not lack a supporting condition. And what is the supporting condition
for emancipation? 'Dispassion' should be the reply.
"Dispassion, monks, also has a supporting condition, I say, it does not
lack a supporting condition. And what is the supporting condition for
dispassion? 'Disenchantment' should be the reply.
"Disenchantment, monks, also has a supporting condition, I say, it does
not lack a supporting condition. And what is the supporting condition
for disenchantment? 'The knowledge and vision of things as they really
are' should be the reply.
"The knowledge and vision of things as they really are, monks, also has
a supporting condition, I say, it does not lack a supporting condition.
And what is the supporting condition for the knowledge and vision of
things as they really are? 'Concentration' should be the reply.
"Concentration, monks, also has a supporting condition, I say, it does
not lack a supporting condition. And what is the supporting condition
for concentration? 'Happiness' should be the reply.
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From the point of view of what makes sense to me in how I interpret the
Buddha's instruction in this sutta of the conditioned steps that lead to
full liberation, I would think samādhi would probably refer to samādhi
the group (sammā samādhi + sammā sati + sammā vāyāmo) rather than just
the 4 jhānas (sammā samādhi), as the former is more integrated and
comprehensive. But that's just a guess. When we read suttas in the
tipitaka, how do we know which Samādhi is being referred to?