About Dhyāna sutras

The Dhyāna sutras or "meditation summaries" or also known as The Zen Sutras are a group of early Buddhist meditation texts which are mostly based on the Yogacara meditation teachings of the Sarvāstivāda school of Kashmir circa 1st-4th centuries CE. Most of the texts only survive in Chinese and were key works in the development of the Buddhist meditation practices of Chinese Buddhism.