金光明經文句記 1.106

1.106

初、因緣釋。山峯之勢似鷲之頭。或云靈鷲，此鳥有靈，知人死時故。又多仙靈隱其中故。《說文》云「鷲，黑色多子」。

First, the interpretation in terms of causes and conditions. The topography of the mountain peak resembles a vulture's head. Alternatively, it is called the Numinous Vulture because this bird is numinous, knowing when a person is about to die; also because many immortals and spirits dwell concealed within it. The Shuowen says: 'The vulture is black and has many offspring.'