Place the other foot firmly over the generative organ, with the ankle positioned over the genital area.

The second foot is placed over the first, with the ankle (or heel) positioned over the genital area (meḍhra). This configuration creates a “seal” that contains sexual energy at its place of origin.

This instruction has generated debate among commentators. Some interpret that the foot should press directly on the genitals; others, that it simply rests on the lower foot with the ankle near the pubic area. The practical interpretation depends on individual anatomy.

The energetic purpose is clear: by pressing both the perineum (from below with the first heel) and the genital area (from above with the second foot), a containment is created that prevents the dissipation of vital energy downward and outward.

Susthiram — “very firm” — emphasizes that the position must be maintained without movement, creating the conditions for the interiorization of prāṇa.