Bhagavad Gita Chapter 18 Verse 18
भगवद् गीता अध्याय 18 श्लोक 18

ज्ञानं ज्ञेयं परिज्ञाता त्रिविधा कर्मचोदना।
करणं कर्म कर्तेति त्रिविधः कर्मसंग्रहः।।18.18।।



English Translation - Dr. S. Sankaranarayan
18.18. The instrument of knowledge,  the object-of-knowledge, and the knowing subject-the prompting-in-action, consisting of these three-fold elements is [itself] the proper grasping of action with three-fold elements viz., the instrument, the object and the agent.


English Translation of Commentary  - Dr. S. Sankaranarayan
18.18 Jnanam etc.  Prompting-in-action :  the will to exert. At that time those things which - because they exist in ones thought alone - are referable by the terms knowledge, obect-of-knowledge and knowing-subject;  at the time of that will (to exert) taking the form  I shall enjoy it; for it is caused by me  as well as at the time of executing th act, the very same things-because they are fully absorbed  [in desire for fruits] - get the names instrument, object and agent.  Therefore, because there is no such absorption  [in desire for fruits] in the case of  the men of Yoga, there is  no  room in their action for the expressions instrument etc.; rather they exist only as knowledge etc.  This is the purport here.			
 Now  [the Lord]  speaks to explain, in brief, the classification of all these six items, basing on the classification of the Strands :-


Transliteration Bhagavad Gita 18.18Jnaanam jneyam parijnaataa trividhaa karmachodanaa;
Karanam karma karteti trividhah karmasangrahah.


Word Meanings Bhagavad Gita 18.18jñānam—knowledge; jñeyam—the object of knowledge; parijñātā—the knower; tri-vidhā—three factors; karma-chodanā—factors that induce action; karaṇam—the instrumens of action; karma—the act; kartā—the doer; iti—thus; tri-vidhaḥ—threefold; karma-saṅgrahaḥ—constituents of action