Books of Patanjali

Courtesy: Sri.HN.Bhat

It is popular that Muni Patanjali, himself had written three works 

 

 
1. योगसूत्र - to purify mind, 
2. महाभाष्य commentary on अष्टाध्ययी - in शब्दशास्त्र to purify the language.
3. चरकसंहिता - compilation of the सिद्धान्त-s of of चरक school in आयुर्वेद, to preserve health of body, respectively.
 

 
All the three are available in pdf or online text format. 
 

 
http://www.ashtangayoga.info/philosophy/yoga-sutra-patanjali/chapter-1/ 
 

 
Here begins the first Chapter of Yogasutra-s with English Translation. Pdf versions will be available everywhere. Here is one with English Translation:
 

 
http://yogaclassics.org/docs/ESSENTIAL_YOGA_SUTRAS.pdf
 

 
The others are large enough with the commentaries. Without commentary, both are availabe for online in Vikipedia book online:
 

 
Here is the first Chapter of महाभाष्य - 
 

 
http://sa.wikibooks.org/wiki/%E0%A4%AA%E0%A4%B8%E0%A5%8D%E0%A4%AA%E0%A4%B6%E0%A4%BE%E0%A4%B9%E0%A5%8D%E0%A4%A8%E0%A4%BF%E0%A4%95 
 

 
and here is चरकसंहिता -
 

 

 
http://sa.wikibooks.org/wiki/%E0%A4%9A%E0%A4%B0%E0%A4%95%E0%A4%B8%E0%A4%82%E0%A4%B9%E0%A4%BF%E0%A4%A4%E0%A4%BE