Śivasaṃhitā 4.25

This verse operates as a structural index within the chapter, announcing forthcoming practices: uḍḍāna (the abdominal lock), vajroṇī (the mudrā of the vajra nerve), and, in tenth position, śakticālana, the technique of energy mobilization. The enumeration reveals a deliberate pedagogical hierarchy in the transmission of these advanced practices.

Śakticālana compounds śakti (energy, power, the cosmic feminine force) with cālana (movement, stirring). Together they literally denote ‘the awakening and circulation of energy’. Vajroṇī refers to the vajranāḍī, the energetic channel associated with the urogenital system, central to tantric practices of sexual sublimation.

Placing śakticālana in the tenth position implies it is considered the most advanced or culminating practice in the sequence. In the Hatha Yoga tradition, the ordering of techniques is never arbitrary but reflects an initiatory progression moving from the more accessible to the most esoteric practices.