“In introducing the various Upāya offered within
verses 20 to 39 in Yoga Sūtra Chapter One,
Krishnamacharya talks about Das Upāya,
of which two are Śodhanam Sādhana
and eight are Śamanam Sādhana.”
– Paul Harvey on Yoga Sūtra Chapter One verses 20-39
Paul’s Yoga Mālā – A Thread of Pearls from Patañjali’s Yoga Sūtra
