Patanjali was a sage in India, thought to be the author of a number of Sanskrit works.   The greatest of these are the Yoga Sutras, a classical yoga text, a text on Yoga theory and practice,[10] and a notable scholar of Samkhya school of Hindu philosophy.[11][12]   

He is variously estimated to have lived between 2nd century BCE to 4th century CE, with more scholars accepting dates between 2nd and 4th century    

The Yogasutras is one of the most important texts in the Indian tradition and the foundation of classical Yoga.[15] It is the Indian Yoga text that was most translated in its medieval era into forty Indian languages.[16] Patanjali is one of the 18 siddhars in the Tamil siddha (Shaiva) tradition.[19]

Patanjali continues to be honoured with invocations and shrines in some forms of modern postural yoga, such as Iyengar Yoga[20] and Ashtanga Vinyasa Yoga.[21]

Regarding his early years, a Tamil Saiva Siddhanta tradition from around 10th century AD holds that Patañjali learned Yoga along with seven other disciples from the great Yogic Guru Nandhi Deva, as stated in Tirumular's Tirumandiram (Tantra Yoga Sūtra The Yoga Sūtras of Patañjali are 196 Indian sutras (aphorisms) on Yoga. It was the most translated ancient Indian text in the medieval era, having been translated into about forty Indian languages and two non-Indian languages: Old Javanese and Arabic.[16] 

The text fell into obscurity for nearly 700 years from the 12th to 19th century, and made a comeback in late 19th century due to the efforts of Swami Vivekananda and others.

It gained prominence again as a comeback classic in the 20th century.[51] Before the 20th century, history indicates the Indian yoga scene was dominated by other Yoga texts such as the Bhagavad Gita, Yoga Vasistha and Yoga Yajnavalkya.[52] Scholars consider the Yoga Sūtras of Patañjali formulations as one of the foundations of classical Yoga philosophy of Hinduism.[53][54] Patanjali is honoured with invocations and shrines in some modern schools of yoga, including Iyengar Yoga[20] and Ashtanga Vinyasa Yoga.[21]