Verse from the Rasayana chapter (approx.):
Modern seekers often look for the to access digitized editions, such as the comprehensive translation by Swami Vishnuswaroop or the scholarly work of Janardan Pandey . Core Philosophy and Structure
The text is famous for introducing specific Hatha Yogic concepts that are now standard in modern yoga.
Rather than searching for a specific "2021 PDF," look for the translation by Pancham Sinh or the critical editions provided by Motilal Banarsidass , which are often digitized by the Internet Archive (archive.org).