Gita

As an addition to Patanjali Yoga Sutras, and Taittiriya Upanishad, the Bhagavad Gita is the perfect complement for a proper Yoga teacher training program, as the set of canonical Yoga Shastras.

Whereas in popular commentary : 

• PYS is very much an inward focused Yoga text, and 

• the Gita is all about selfless action (karma-yoga), 

in fact in practice they could both be reversed in perspective too. 

After all what are the :

• Vibhuti powers of PYS all about if not for deployment into action and in any case we have Ishwara loaded up to make us self-less, and

• the different mind states of Arjuna as he is talked through them by Krishna, so there is a ton to contemplate on the inner psyche in the Gita.

What is particularly noteworthy is that the Kurukshetra is truly an Asura formation, all the erstwhile younger-day Rakshasas having fossilized into unyielding positions, and willing to fight to the death - the classic definition of an Asura.