In the text of Unas, [Footnote: Ed Maspero, Pyramides de Saqqarah; p. 25.] a king who reigned about B.C. 3300, we find the passage:"That which is sent by thy ka cometh to thee, that which is sent by thy father cometh to thee, that which is sent by R[=a] cometh to thee, and it arriveth in the train of thy R[=a].

Maspero, Pyramides da Saqqarah, p. 111.]