Śivasaṃhitā 3.62

Gradual practice (abhyāsakrama) — sequential, methodical, without leaps — inevitably produces the capacity for three ghatis (approximately one hour and fifteen minutes) of kumbhaka. Krama (sequence, order) is the key word: there are no miracles or shortcuts in this pedagogy. The body and nervous system transform following a precise sequence that cannot be arbitrarily accelerated without consequences.

Praṇava (the mantra OM) as karma destroyer acts here differently from its use in verse 48: not as externally repeated sound but as internal recognition of the primordial vibration underlying all manifestation. Destroying karma with praṇava is recognizing that karma’s source — identification with the separate ego — has no real substance beyond the sound sustaining it.

Kāyavyūha is one of the text’s most esoteric concepts: the «arrangement of the body» through which the yogin can experience in a single life the effects of multiple lives of accumulated karma, thus avoiding the necessity of rebirth. It is the technique of extreme spiritual acceleration: instead of living life after life gradually consuming karma, the yogin consumes all karma in a single existence through practice so intense it compresses karmic time.