瑜伽論記 7.43

7.43

逆算數者，且如以一為一數中，從十數至其一，所謂入十出九，入八出七，入六出五，入四出三，入二出一。

Concerning 'reverse counting': for instance, in counting one as one, counting from ten down to one—namely, in-ten, out-nine; in-eight, out-seven; in-six, out-five; in-four, out-three; in-two, out-one.