Patanjali muni wrote the following due to great daya on human beings: After doing Sarirasuddhi and obtaining kaya siddhi, and through that and favourable to this a vaidya sastra, and after doing vak Suddhi and from that achieve sabdha brahma upasana to give wellness, and for this vyakaraṇa of panini grammar, to cleanse manas and attain kaivalya, this yoga-sutra.Important attributes are achievements of yoga-sastra are: 1.svarupa of yoga-sadhana2.Super natural power one gets as side effects3.siddhi and kaivalya In these matters upanishad and yoga-sastra do not have any contradiction. In fact, yoga is a tool to achieve the tatva of upanishad and to see them by oneself. The clashes come because yoga takes sankya sastra as base. Yoga and sankya have many differences, with sastra and upanishad. in some important matters yoga-sastra and upanishad do not agree on certain views.CHAPTER SUMMARY SutrA 1,2: Defines yogaḥSutrA 3,4: Options for awarenessFrom Sutra 5 to 11: Description of vrrttiFrom Sutra12 to 16: How to control vrrtti by abhyasa (practice) SutrA 17,18: Division of samadhi into samprajnata and asamprajnataSutrA19: Some discussions on other states that resemble the samadhiSutrA 20 to 22: How to attain samadhi some pointersSutra 23: Introduction of Ishvara and He is the easy method of attaining samadhiSutrA 24 to 26: His natureSutrA 27 to 29: Chanting Ishvara's nameSutrA 30 and 31: Distractions of manas (Mind) and their accompanying effect.SutrA 32 to 40: Meditation on any object to combat these distractionsSutrA 41 to 45: Concept of samapatti and its varitiesSutrA 46 to 48: Fruits of samapattiSutrA 49: Object of samapatti, discussion of samaprajnata - samadhiSutrA 50, 51: asamprajnata samadhi
