The Religion of the Veda: The Ancient Religion of India (from Rig-Veda to Upanishads) c6.s1.71

c6.s1.71

“Yama and Yamī (‘the twins’) are the first man and woman. Yama died. The gods sought to console Yamī for the death of Yama. When they asked her she said, ‘To-day he hath died.’ They said: ‘In this way she will never forget him. Let us create night!’ Day only at that time existed, not night. The gods created night. Then morrow came into being. Then she forgot him. Hence, they say, ‘Days and nights make men forget sorrow.’”