Śivasaṃhitā 5.137

This verse provides a precise anatomical route within the subtle body: the flow originates from the left side of the ājñā lotus — the command center between the eyebrows — and travels toward the right nostril (dakṣanāsāpuṭa). This trajectory maps the upper course of the piṅgalā nāḍī, the solar channel of the subtle body.

The compound ājñāpaṅkaja (‘the lotus of ājñā’) identifies one of the most significant centers in tantric physiology, associated with higher cognition, the guru principle, and inner vision. Vāmāsya — ‘left-faced’ or ‘from the left side’ — specifies the precise point of departure within that lotus. Dakṣanāsāpuṭa, ‘the right nostril cavity’, marks the terminal point of this descending solar current.

This routing is consistent with the nāḍī maps found in the Haṭhapradīpikā and related texts, where piṅgalā is consistently associated with the right nostril, solar energy, and the outward, consuming aspect of prāṇa. Understanding this pathway is prerequisite to practices like sūryabhedana prāṇāyāma and nāḍīśodhana, which deliberately manipulate the balance between solar and lunar currents.