Tamāla Kṛṣṇa: "In other words he wanted to skillfully avoid the fighting by using Kṛṣṇa consciousness as an excuse. But as a sincere student, he placed the matter before his master and questioned Kṛṣṇa as to his best course of action. In answer, Lord Kṛṣṇa elaborately explained karma-yoga, or work in Kṛṣṇa consciousness, in this third chapter."
Prabhupāda: Yes. Karma-yoga means... Karma means action, fruitive action. Everyone is working in this world to get some result. Somebody is working in business, earning millions of dollars yearly. Why he is earning? He's earning for his sense gratification. As soon as he has got money, he changes his car, he changes his apartment, changes his standard of life only for increasing. The whole world is working so hard, and the result is that increasing their objects of sense gratification. This is called karma. Karma means to enjoy the result of your activities.