Patanjali in the context of "Yoga Sutras of Patanjali"

Shakala Shaka (Sanskrit: शाकल शाखा; IAST: Śākala Śākhā), is the oldest shakha (from skt. śākhā f. "branch" or "recension") of the Rigveda. The Śākala tradition is mainly followed in Maharashtra, Karnataka, Kerala, Odisha, Tamil Nadu and Uttar Pradesh. The Mahābhāṣya of Patañjali refers to 21 śākhās of the Rigveda; however, according to Śaunaka's Caraṇa-vyuha there are five śākhās for the Rigveda: the Śākala, Bāṣkala, Aśvalayana, Śaṅkhāyana, and Māṇḍukāyana, of which only the Śākala and Bāṣkala and few of the Aśvalayana are now extant. The only complete recension of Rigveda known today is of the Śākala School. There is a claim that Śaṅkhāyana Śākhā is still known to a few Vedapathis in Uttar Pradesh and Gujarat but this is not certain.

The main saṃhitā for Śākala Sākhā is the Śākala Saṃhitā and the corresponding brahmana is Aitareya Brāhmaṇa. The main Upaniṣat of the Śākala Śākhā is Aitareya Upaniṣat. The Śrauta Sūtram for Śākala Shākhā is Āśvalāyaṇa Śrauta Sūtra and the Gṛhya Sutra is Āśvalāyana Gṛhya Sūtram. The Āraṇyaka of Śākala Śākhā is Aitareya Āraṇyaka.

Samādhi (Pali and Sanskrit: समाधि), in the Indian religions, is a state of meditative consciousness. In many such traditions, the cultivation of samādhi through various meditation methods is essential for the attainment of spiritual liberation (known variously as nirvana, moksha).

In Buddhism, it is the last of the eight elements of the Noble Eightfold Path. In the Ashtanga Yoga tradition, it is the eighth and final limb identified in the Yoga Sutras of Patanjali. In Jain meditation, samadhi is considered one of the last stages of the practice just prior to liberation.

Apabhraṃśa (Sanskrit: अपभ्रंश, IPA: [ɐpɐbʱrɐ̃ˈɕɐ], Prakrit: अवहंस Avahaṃsa) is a term used by vaiyākaraṇāḥ (native grammarians) since Patañjali to refer to languages spoken in North India before the rise of the modern languages. In Indology, it is used as an umbrella term for the dialects forming the transition between the late Middle and the early Modern Indo-Aryan languages, spanning the period between the 6th and 13th centuries CE. However, these dialects are conventionally included in the Middle Indo-Aryan period. Apabhraṃśa in Sanskrit literally means "corrupt" or "non-grammatical language", that which deviates from the norm of Sanskrit grammar.

Apabhraṃśa literature is a valuable source for the history of North India for the period spanning the 12th to 16th centuries.

Ashtanga yoga (Sanskrit: अष्टाङ्गयोग, romanized: aṣṭāṅgayoga, "eight limbs of yoga") is Pātañjali's classification of classical yoga, as set out in his Yoga Sūtras. He defined the eight limbs as yama (abstinences), niyama (observances), āsana (postures), prāṇāyāma (breath control), pratyāhāra (withdrawal of the senses), dhāraṇā (concentration), dhyāna (meditation), and samādhi (absorption).

The eight limbs form a sequence from the outer to the inner. The posture, asana, must be steady and comfortable for a long time, in order for the yogi to practice the limbs from prāṇāyāma until samādhi. The main aim is kaivalya, discernment of Puruṣa, the witness-conscious, as separate from Prakṛti, the cognitive apparatus, and disentanglement of Puruṣa from its muddled defilements.

Ashtanga yoga (not to be confused with Patanjali's aṣṭāṅgayoga, the eight limbs of yoga) is a style of yoga as exercise popularised by K. Pattabhi Jois during the twentieth century, often promoted as a dynamic form of medieval hatha yoga. Jois claimed to have learnt the system from his teacher Tirumalai Krishnamacharya. The style is energetic, synchronising breath with movements. The individual poses (asanas) are linked by flowing movements called vinyasas.

Jois established his Ashtanga Yoga Research Institute in 1948. The current style of teaching is called "Mysore style", after the city in India where the practice was originally taught. Ashtanga yoga has given rise to various spinoff styles of power yoga.

The yamas (Sanskrit: यम, romanized: yama), and their complement, the niyamas, represent a series of "right living" or ethical rules within Yoga philosophy. The word yama means "reining in" or "control". They are restraints for proper conduct given in the Vedas and the Yoga Sutras as moral imperatives, commandments, rules or goals. The yamas are a "don't"s list of self-restraints, typically representing commitments that affect one's relations with others and self. The complementary niyamas represent the "do"s. Together yamas and niyamas are personal obligations to live well.

The earliest mention of yamas is in the Rigveda. More than fifty texts of Hinduism, from its various traditions, discuss yamas. Patañjali lists five yamas in his Yoga Sūtras. Ten yamas are codified as "the restraints" in numerous Hindu texts, including Yajnavalkya Smriti in verse 3.313, the Śāṇḍilya and Vārāha Upanishads, the Hatha Yoga Pradipika by Svātmārāma, and the Tirumantiram of Tirumular.