Context

Having described jīvanmukti in sūtra 16, Kṣemarāja now turns to the means: how does one attain cidānanda and access the center? Sūtra 17 names the means in summary — expansion of the center — and sūtra 18 lists specific methods. Everything from here to the end of the text is methodology and its fruition.

Primary reading

The shortest sūtra since sūtra 6, and the practice pivot of the entire text. Cidānanda is attained through madhyavikāsa — the expansion, the blossoming, of the center. The center is the locus where all opposites meet and dissolve: subject and object, breath in and breath out, waking and sleep. When the center expands, the recognition naturally arises. The ablative construction is exact: the expansion is not a metaphor for the attainment but its cause.

Commentarial layer

Kṣemarāja's commentary unfolds madhya through its multiple referents: the central channel (suṣumnā), the middle state between any two opposites, the heart-center, and the khecarī mudrā — the mudrā of moving in the space of consciousness. He treats the expansion of each register of madhya as a valid upāya: the term's polyvalence is itself part of the teaching, since every threshold in experience opens onto the same center.

Common misreadings

Reading 'center' as a location in the body — madhya is the threshold between opposites, not a fixed anatomical point; the suṣumnā is one of its registers, not its definition. And treating vikāsa as something one does — forcing open — rather than something one discovers: the center is naturally present when attention withdraws from the extremes.