俱舍論頌疏論本 27.100

27.100

行三意勢佛，運身勝解通者，釋行境也。行有三種：一者運身，謂乘空行猶如飛鳥。二者勝解，謂極遠方作近思惟，便能速至。三者意勢，謂極遠方舉心即至，此勢如意，得意勢名。意勢唯佛，運身、勝解亦通二乘。

Regarding "locomotion is threefold: mental speed is the Buddha's; transporting the body and imaginative resolve are shared": this explains the sphere of locomotion. Locomotion is of three kinds: first, transporting the body, which means traveling through space like a flying bird; second, imaginative resolve, which means conceptualizing an extremely distant place as near, whereby one can arrive quickly; third, mental speed, which means arriving instantly upon raising the thought of an extremely distant place; because this speed is like the mind, it obtains the name "mental speed." Mental speed belongs only to the Buddha, while transporting the body and imaginative resolve are also shared with the two vehicles.