Translation
Yoga Sutras of Patanjaliयोगसूत्राणि
By Patañjali. Translated by Various (public domain), 1900. Public domain.
A foundational text of yoga philosophy in 196 short sūtras across four pādas. Conventionally dated to between the 2nd century BCE and the 4th century CE. Multiple public-domain English translations exist, including those of Manilal Dvivedi, Charles Johnston, and Swami Vivekananda; modern critical translations (Bryant, Maas) build on these.