Between śāmbhavī and khecarī there is only a difference in the point of concentration.With the mind dissolved in the space of the heart, one meditates on emptiness through emptiness.

This verse clarifies the relationship between two important mudrās:

Śāmbhavyāḥ khecaryāḥ — between śāmbhavī and khecarī mudrā.Both are internalization practices but with different techniques.

Lakṣya-bhedo kevalam — they differ only in the point of focus.The essence is the same: absorption of the mind in an internal goal.

Hṛd-ākāśe mano līnam — the mind dissolved in the space of the heart.Hṛdaya-ākāśa is the inner space of the heart, a central concept in the Upaniṣads.It is the seat of pure consciousness, beyond the physical heart.

Śūnyaṃ śūnyena tapeyet — meditate on emptiness through emptiness.This phrase is profound: there is no subject meditating on an object called “emptiness.”The void contemplates the void;meditation itself is empty of meditator.

The Bihar School explains that khecarī works primarily with the tongue and palate, directing attention upward, while śāmbhavī works with the eyes and between the eyebrows.But the destination is the same: the conscious emptiness of the heart.

Mallinson notes that this identification of different practices with a single objective is characteristic of the eclecticism of the Haṭha Pradīpikā.