"The Dead at the Tree of Life and Spring of Life." (Vol.12, p.36. figure 23. Louis Herbert Gray. The Mythology of All Races, Egyptian and Indo-Chinese. Boston. Marshall Jones Company. 1918)
The righteous dead were frequently portrayed as being nourished by a tree goddess, in this scene, the goddess' arms as a tree, pours out a drink. The tree is near a pool of water.