首楞嚴義疏注經 3.165

3.165

In Sanskrit it is called dhātu, translated here as realm (jie). 'Realm' has the meaning of 'cause', because the three—faculty, object, and consciousness—serve mutually as causes. It also has the meaning of 'category' (species/lineage), because faculty, object, and consciousness each constitute one category. Furthermore, the six beginning with the eye are distinct in their categories.