Some call this Siddhāsana, others know it as Vajrāsana, some call it Muktāsana, and others Guptāsana.

This verse reveals that the same posture has multiple names in different traditions. Each name illuminates a different aspect of the practice:

• Siddhāsana — Posture of the siddha, the perfected adept who has attained yogic powers.
• Vajrāsana — Thunderbolt/diamond posture. Vajra is also a name for the male organ; the posture “seals” it.
• Muktāsana — Posture of liberation. Indicates its power to lead toward mokṣa.
• Guptāsana — Secret or hidden posture. Suggests both the concealment of the genitals and the esoteric nature of the practice.

This multiplicity of names indicates not confusion but richness. Different lineages emphasized different aspects of the same posture. The Nāth tradition prefers Siddhāsana; other tantric schools may use the other names.

For the modern practitioner, knowing these synonyms helps navigate among diverse texts and traditions.