Here there is no loss of effort, Nor does any adverse effect exist. Even a very little of this duty (dharma), Saves from great fear.
No effort in this world is lost or wasted; a fragment of sacred duty saves you from great fear.
(40) Herein no effort goes to seed nor is there any slipping back: even a very little of this discipline (dharma) will protect [you] from great peril.
2.40 Here there is no waste of an attempt; nor is there (any) harm. Even a little of this righteousness saves (one) from great fear.
2.40 Here, there is no loss of effort, nor any accrual of evil. Even a little of this Dharma (called Karma Yoga) protects a man from the great fear.
2.40 In this there is no loss of effort, nor is there any harm (production of contrary results or transgression). Even a little of this knowledge (even a little practice of this Yoga) protects one from great fear.