“The terms Ha and Ṭha also represent
two extreme sides of a wavering mind.
Ha often is meant to represent the sun, Ṭha the moon.
Suṣumṇā in the middle Nāḍī.
Prāṇa in the Ha and Ṭha represents
a confused and wavering mind.
Prāṇa in the  Suṣumṇā represents a clear, steady mind.
Hence, Jñāni is one whose Prāṇa is in Suṣumṇā
and Ajñāni is one whose Prāṇa is still
in the opposite two Nāḍī, Ha and Ṭha.”
– TKV Desikachar Religiousness in Yoga
‘Various Approaches to Yoga’
Chapter Seventeen Page 246-247