The Haṭha Ratnāvalī is a Haṭha yoga text written in the 17th century by Srinivasa.
[1] It states (1.17-18) that asanas, breath retentions, and seals assist in Haṭha yoga.
[2] It mentions 8 purifications (shatkarmas), criticising the Hatha Yoga Pradipika for only describing 6 of these.
[3] It is one of the earliest texts (the other being the unpublished Yogacintāmaṇi) actually to name 84 asanas,[4] earlier manuscripts having simply claimed that 84[a] or 8,400,000 asanas existed.
[6] The 84 asanas listed (HR 3.7-20[7]) include several variations of Padmasana and Mayurasana, Gomukhasana, Bhairavasana, Matsyendrasana, Kurmasana, Kraunchasana, Mandukasana, Yoganidrasana, and many names now not in wide usage; it provides descriptions of 36 of these asanas.