देवत इति सोऽग्निः कस्मिन्प्रतिष्ठित इति वाचीति कस्मिन्नु वाक्प्रतिष्ठितेति हृदय इति कस्मिन्नु हृदयं प्रतिष्ठितमिति ॥ २४ ॥
In plain words
...Agni, he says, completing the answer from the torn page. And what holds Agni up? Speech. What holds speech up? The heart. And now the question turns back on itself: what, then, holds the heart up?
Close to the Sanskrit
'...is my deity', he said. That Agni — 'on what is he founded?' — 'On speech.' 'On what, then, is speech founded?' — 'On the heart.' 'On what, then, is the heart itself founded?'