Chang Ahan jing （the Longer a^gama-sutra） T 1.1.1a-149c. Di^rgha^gama; 'dus pa chen po'i mdo. 22 fasc. tr. Buddhaya/sas 佛陀耶舍 and Zhu fonian 竺佛念 in 412-13 CE. It is one of the four a^gamas in Chinese， written in four vargas 品. It deals with the life of the Buddha in its first varga， teaching and practice in the second， refutation of other teachings in the third， and Buddhist cosmology in the fourth. It is considered to be similar to the Pali Di^gha-nika^ya