tatra sthitau yatno 'bhyāsaḥ [YS 1.13]

cittasyāvṛttikasya praśāntavāhitā sthitiḥ. tadarthaḥ prayatno vīryam utsāhaḥ. tat saṃpipādayiṣayā tat sādhanānuṣṭhānam abhyāsaḥ.