一切經音義 27.86

27.86

夜叉（藥叉此云勇健即飛行者也亦含攝地行之類諸羅剎娑羅剎娑此云暴惡亦云可畏也）。

Yakṣa (yecha): (Yakṣa; here translated as 'valorous and swift', namely those who fly through the air; it also encompasses the terrestrial kind. As for the various rākṣasas: rākṣasa is translated here as 'violent and evil', and also called 'terrifying').