From whom is the origin of beings, by whom all this is pervaded, Worshipping Him with his own action (svakarma), a man finds perfection (siddhi).
By his own action a man finds success, worshipping the source of all creatures' activity, the presence pervading all that is.
(46) By dedicating the work that is proper [to his caste] to Him who is the source of the activity of all beings, by whom this whole universe was spun, a man attains perfection-and-success.
18.46 A human being achieves success by adoring through his own duties Him from whom is the origin of creatures, and by whom is all this pervaded.
18.46 He from whom arise the activity of all beings and by whom all this is pervaded --- by worshipping Him with his own duty man reaches perfection.
18.46 He from Whom all the beings have evolved and by Whom all this is pervaded -- worshipping Him with his own duty, man attains perfection.