The word vipra mentioned herein is significant. There is a little difference between the vipras and the brāhmaṇas. The vipras are those who are expert in karma-kāṇḍa, or fruitive activities, guiding the society towards fulfilling the material necessities of life, whereas the brāhmaṇas are expert in spiritual knowledge of transcendence. This department of knowledge is called jñāna-kāṇḍa, and above this there is the upāsanā-kāṇḍa. The culmination of upāsanā-kāṇḍa is the devotional service of the Lord Viṣṇu, and when the brāhmaṇas achieve perfection, they are called Vaiṣṇavas. Viṣṇu worship is the highest of the modes of worship. Elevated brāhmaṇas are Vaiṣṇavas engaged in the transcendental loving service of the Lord, and thus Śrīmad-Bhāgavatam, which is the science of devotional service, is very dear to the Vaiṣṇavas. And as explained in the beginning of the Śrīmad-Bhāgavatam, it is the mature fruit of Vedic knowledge and is superior subject matter, above the three kāṇḍas, namely karma, jñāna and upāsanā.
(Srimad Bhagavatam-----1:12:29-----purport).

Su-viṣaya and ku-viṣaya both fall under the category of karma-kāṇḍa. There is another kāṇḍa (platform of activity), called jñāna-kāṇḍa, or philosophical speculation about the effects of ku-viṣaya and su-viṣaya with the intention to find out the means of deliverance from material entanglement. On the platform of jñāna-kāṇḍa, one may give up the objects of ku-viṣaya and su-viṣaya. But that is not the perfection of life. Perfection is transcendental to both jñāna-kāṇḍa and karma-kāṇḍa; it is on the platform of devotional service. If we do not take to devotional service in Kṛṣṇa consciousness, we have to remain within this material world and endure the repetition of birth and death due to the effects of jñāna-kāṇḍa and karma-kāṇḍa. Therefore Narottama dāsa Ṭhākura says:
nānā yoni sadā phire, kadarya bhakṣaṇa kare
tāra janma adhaḥ-pāte yāya
"One travels throughout various species of life and eats all kinds of nonsense. Thus he spoils his existence." A man in material existence and attached to ku-viṣaya or su-viṣaya is in the same position as that of a worm in stool. After all, whether it be moist or dry, stool is stool. Similarly, material activities may be either pious or impious, but because they are all material, they are compared to stool.
(Sri Caitanya Caritamrta-----2:1:198-----purport).

When one's faith reaches the stage of transcendental knowledge, the performer of sacrifices should be considered more advanced than those who simply sacrifice material possessions without such knowledge, for without attainment of knowledge, sacrifices remain on the material platform and bestow no spiritual benefit. Real knowledge culminates in Kṛṣṇa consciousness, the highest stage of transcendental knowledge. Without the elevation of knowledge, sacrifices are simply material activities. When, however, they are elevated to the level of transcendental knowledge, all such activities enter onto the spiritual platform. Depending on differences in consciousness, sacrificial activities are sometimes called karma-kāṇḍa (fruitive activities) and sometimes jñāna-kāṇḍa(knowledge in the pursuit of truth). It is better when the end is knowledge.
(Bhagavad-Gita-----4:33-----purport).

The impersonal aspect of the Absolute Truth is not the highest. Above the impersonal feature is the Paramātmā feature, and above this is the personal feature of the Absolute Truth, or Bhagavān. Śrīmad-Bhāgavatam gives information about the Absolute Truth in His personal feature. It is higher than impersonalist literatures and higher than the jñāna-kāṇḍa division of the Vedas. It is even higher than the karma-kāṇḍa division, and even higher than the upāsanā-kāṇḍa division, because it recommends the worship of the Supreme Personality of Godhead, Lord Śrī Kṛṣṇa. In the karma-kāṇḍa, there is competition to reach heavenly planets for better sense gratification, and there is similar competition in the jñāna-kāṇḍaand the upāsanā-kāṇḍa. The Śrīmad-Bhāgavatam is superior to all of these because it aims at the Supreme Truth which is the substance or the root of all categories. From Śrīmad-Bhāgavatam one can come to know the substance as well as the categories. The substance is the Absolute Truth, the Supreme Lord, and all emanations are relative forms of energy.
(Srimad Bhagavatam-----1:1:2-----purport).

Bhakti-yoga is the highest quality of perfection to be achieved by the intelligent person in lieu of performing a large quantity of spiritual activities. The example cited here is very appropriate. A handful of real paddy is more valuable than heaps of paddy skins without any substance within. Similarly, one should not be attracted by the jugglery of karma-kāṇḍa or jñāna-kāṇḍa or even the gymnastic performances of yoga, but skillfully should take to the simple performances of kīrtanam, smaraṇam, etc., under a bona fide spiritual master, and without any difficulty attain the highest perfection.
(Srimad Bhagavatam-----2:4:16-----purport).

Lord Brahmā, being the creator of all living beings in the universe, is originally the father of several well-known sons, like Dakṣa, the catuḥ-sanas, and Nārada. In three departments of human knowledge disseminated by the Vedas, namely fruitive work (karma-kāṇḍa), transcendental knowledge (jñāna-kāṇḍa), and devotional service (upāsanā-kāṇḍa), Devarṣi Nārada inherited from his father Brahmā devotional service, whereas Dakṣa inherited from his father fruitive work, and Sanaka, Sanātana, etc., inherited from their father information about jñāna-kāṇḍa, or transcendental knowledge. But out of them all, Nārada is described here as the most beloved son of Brahmā because of good behavior, obedience, meekness and readiness to render service unto the father.
(Srimad Bhagavatam-----2:9:42-----purport).

Śrīla Narottama dāsa Ṭhākura, a great ācārya of the Gauḍīya-sampradāya, has said that persons who are very much attached to the fruitive activities of the Vedas, namely karma-kāṇḍa and jñāna-kanda, are certainly doomed. In the Vedas there are three categories of activities, known as karma-kāṇḍa (fruitive activities), jñāna-kāṇḍa (philosophical research) and upāsanā-kāṇḍa (worship of different demigods for receiving material benefits). Those who are engaged in karma-kāṇḍa and jñāna-kāṇḍa are doomed in the sense that everyone is doomed who is entrapped by this material body, whether it is a body of a demigod, a king, a lower animal or whatever. The sufferings of the threefold miseries of material nature are the same for all. Cultivation of knowledge to understand one's spiritual position is also, to a certain extent, a waste of time. Because the living entity is an eternal part and parcel of the Supreme Lord, his immediate business is to engage himself in devotional service. Pṛthu Mahārāja therefore says that the allurement of material benedictions is another trap to entangle one in this material world. He therefore frankly tells the Lord that the Lord's offerings of benedictions in the form of material facilities are certainly causes for bewilderment. A pure devotee is not at all interested in bhukti or mukti.
(Srimad Bhagavatam-----4:20:30-----purport).

Śrī Narottama dāsa Ṭhākura has sung, karma-kāṇḍa, jñāna-kāṇḍa, kevala viṣera bhāṇḍa: "The path of karma-kāṇḍa (fruitive activities) and the path of jñāna-kāṇḍa(speculation) are just like strong pots of poison." Amṛta baliyā yebā khāya, nānā yoni sadā phire: "A person who mistakes this poison to be nectar and drinks it travels in different species of life." Kadarya bhakṣaṇa kare: "And, according to his body, he eats all types of abominable things." For instance, when the living entity is in the body of a hog, he eats stool. When the living entity is in the body of a crow, he eats all kinds of refuse, even pus and mucus, and enjoys it. Thus Narottama dāsa Ṭhākura points out that the living entity travels in different types of bodies and eats all kinds of abominable things. When he does not become ultimately happy, he becomes morose or takes to the ways of hippies.
(Srimad Bhagavatam-----4:25:11-----purport).

There are two kinds of actions and reactions—namely pious and impious. In this way our material existence becomes coated by different actions and reactions. In this regard, Śrīla Narottama dāsa Ṭhākura states:
karma-kāṇḍa, jñāna-kāṇḍa, kevala viṣera bhāṇḍa,
amṛta baliyā yebā khāya
nānā yoni sadā phire, kadarya bhakṣaṇa kare,
tāra janma adhaḥ-pāte yāya
"Fruitive activities and mental speculation are simply cups of poison. Whoever drinks of them, thinking them to be nectar, must struggle very hard life after life, in different types of bodies. Such a person eats all kinds of nonsense and becomes condemned by his activities of so-called sense enjoyment."
(Srimad Bhagavatam-----4:27:9-----purport).

Just as a king is seated on a chariot, the living entity is seated in the body. The sitting place is the heart, and the living entity sits there and engages in the struggle for existence, which goes on without progress perpetually. In the words of Narottama dāsa Ṭhākura:
karma-kāṇḍa, jñāna-kāṇḍa, kevala viṣera bhāṇḍa,
amṛta baliyā yebā khāya
nānā yoni sadā phire, kadarya bhakṣaṇa kare,
tāra janma adhaḥ-pāte yāya
The living entity struggles very hard due to the influence of fruitive activity and mental speculation and simply gets a different type of body life after life. He eats all kinds of nonsense and is condemned by his activities of sense enjoyment, If one really wants to progress in life, he must give up the ways of karma-kāṇḍa and jñāna-kāṇḍa, fruitive activities and mental speculation. Being fixed in Kṛṣṇa consciousness, one can become free from the entanglement of birth and death and the vain struggle for existence.
(Srimad Bhagavatam-----4:29:18-20-----purport).