“When using Mṛgi Mudrā to control the nostril flow in Prāṇāyāma,
the ring finger and thumb remain as if glued onto the nostrils,
with one nostril being fully closed and one nostril partially closed,
with adjustments to the pressure according to technique and ratio.
Even when using Ujjāyī within techniques such as Anuloma Ujjāyī,
the finger and thumb remain as if sealed on the sides of the nostrils.
Externally it’s as if there is nothing to observe in terms of the body.
Internally there is a vibrant flow within the dynamics of the breath.”
– 108 Prāṇāyāma Practice Pointers

“One aspect in the refinement of Nāḍī Śodhana
is an almost undetectable deftness within
the finger movement when using Mṛgi Mudrā,
whilst keeping them permanently on the nostrils.”
– 108 Prāṇāyāma Practice Pointers