[Sanskrit]

Yama

1. Controller, Ordainer, Lord of the Law; in the Rig-veda he seems to have been originally a form of the Sun, then one of the twin children of the wide-shining Lord of the Truth; he is the guardian of the dhárma, the law of the Truth, which is a condition of immortality, and therefore himself the guardian of immortality; in the later ideas [post-Vedic] he is the God of Death. 2. [in rajayoga]: a rule of moral self-control.