In the second chapter of Bhagavad-gītā, the Personality of Godhead, Śrī Kṛṣṇa, advises as follows: "Thus far I have explained to you about transcendental knowledge. Now I shall explain to you about work with transcendental results. By this work with transcendental results, you can get rid of the bondage of ordinary work. In this process there is no loss or diminution. Even if very little of this work is done, it can save one from the greatest trouble."
Pure devotional activities are of one variety only. And how these devotional activities can be coordinated with our daily, active life has been explained in Bhagavad-gītā. Coordinating such devotional activities with our daily activities is technically known as karma-yoga. The same devotional activities when mixed with the culture of knowledge are technically called jñāna-yoga. But when such devotional activities transcend the limits of all such work or mental knowledge, this state of affairs is called pure transcendental devotion, or bhakti-yoga.