==new answer== His writings are considered the science of yoga. These sutras have been interpreted in language of mind and explained for us by Dr. Daniel Condron in his book " Laungage of the soul, the Yoga Sutras of Patanjali. The sutras outline the steps to enlightenment.

Shiva is called as Yogeshwar, as he was the first teacher of Yoga. Then Patanjali documented everything into formulas called as Yoga Sutras.

Patanjali's yoga sutras are the origins of yoga and, what may be more important, they are short.

One of the greatest obstacles in yoga is the addiction to vast amounts of concepts an knowledge in general. This may lead to put yoga practices outside your main focus, which would eventually take you out of yoga.

According to Patanjali's "Yoga-sutras":

It's focusing the mind in just one point without distraction

patanjali