BG 2.40
नेहाभिक्रमनाशोऽस्ति प्रत्यवायो न विद्यते। स्वल्पमप्यस्य धर्मस्य त्रायते महतो भयात्
nehābhikrama-nāśho ’sti pratyavāyo na vidyate svalpam apyasya dharmasya trāyate mahato bhayāt
On this path, endeavour is never wasted nor repressed. Even a little practice of it protects one from great danger.
Translated by Shri Purohit Swami
In this, there is no loss of effort, nor is there any harm produced, nor any transgression. Even a little of this knowledge protects one from great fear.
Translated by Swami Sivananda
Word meanings (from the gita/gita dataset)
na—not; iha—in this; abhikrama—efforts; nāśhaḥ—loss; asti—there is; pratyavāyaḥ—adverse result; na—not; vidyate—is; su-alpam—a little; api—even; asya—of this; dharmasya—occupation; trāyate—saves; mahataḥ—from great; bhayāt—danger