瑜伽論記 7.257

7.257

由自策勵發勤精進策心持心名加行滿，修瑜伽師唯有爾所正應作事乃至希願樂欲者，重略上文，為斷三惡為修三善而生希欲。

Exerting oneself, putting forth energetic striving, urging the mind on, and steadying the mind is called “fulfillment of preliminary application.” “The practitioner of yoga has only this much of what should properly be done, up to longing and wishing desire”: this again summarizes the above text, where one generates wishing desire in order to cut off the three evils and cultivate the three goods.