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Rhagavad-ojta  As Jt Is
is above all doubts and mistakes, and  Bhagavad-gītā  is the essence of all Vedic knowledge.
Vedic knowledge is not a question of research. Our research work is imperfect because we are researching things with imperfect senses. We have to accept perfect knowledge which comes down, as is stated in  Bhagavad-gītā , by the  paramparā  discipline succession. We have to receive knowledge from the proper source in discipline succession beginning with the supreme spiritual master, the Lord Himself, and handed down to a succession of spiritual masters. Arjuna, the student who took lessons from Lord Śrī Kṛṣṇa, accepts everything that He says without contradicting Him. One is not allowed to accept one portion of  Bhagavad-gītā  and not another. No. We must accept  Bhagavad-gītā  without interpretation, without deletion and without our own whimsical participation in the matter. The  Gītā  should be taken as the most perfect presentation of Vedic knowledge. Vedic knowledge is received from transcendental sources, and the first words were spoken by the Lord Himself. The words spoken by the Lord are different from words spoken by a person of the mundane world who is infected with four defects. A mundaner 1) is sure to commit mistakes, 2) is invariably illusioned, 3) has the tendency to cheat others and 4) is limited by imperfect senses. With these four imperfections, one cannot deliver perfect information of all-pervading knowledge.
Vedic knowledge is not imparted by such defective living entities. It was imparted unto the heart of Brahmā, the first created living being, and Brahmā in his turn disseminated this knowledge to his sons and disciples, as he originally received it from the Lord. The Lord is  pūrṇam , all-perfect, and there is no possibility of His becoming subjected to the laws of material nature. One should therefore be intelligent enough to know that the Lord is the only proprietor of everything in the universe and that He is the original creator, the creator of Brahmā. In the Eleventh Chapter the Lord is addressed as  prapitāmaha  because Brahmā is addressed as  pitāmaha , the grandfather, and He is the creator of the grandfather. So no one should claim to be the proprietor of anything; one should accept only things which are set aside for him by the Lord as his quota for his maintenance.
There are many examples given of how we are to utilize those things which are set aside for us by the Lord. This is also explained in  Bhagavad-gītā . In the beginning, Arjuna decided that he should not fight in the Battle of Kurukṣetra. This was his own decision. Arjuna told the Lord that it was not possible for him to enjoy the kingdom after killing his own kinsmen. This decision was based on the body because he was thinking that the body was himself and that his bodily relations or expansions