The word brahma-satra means “cultivation of spiritual knowledge.” Actually, both the Vedas and severe austerity are known as brahma (vedas tattvaṁ tapo brahma). Brahma also means “the Absolute Truth.” One has to cultivate knowledge of the Absolute Truth by pursuing studies in the Vedas and undergoing severe austerities and penances. The Pracetās properly executed this function and consequently became equal to all other living entities. As Bhagavad-gītā (18.54) confirms:

brahma-bhūtaḥ prasannātmā
 na śocati na kāṅkṣati
samaḥ sarveṣu bhūteṣu
 mad-bhaktiṁ labhate parām

“One who is thus transcendentally situated at once realizes the Supreme Brahman and becomes fully joyful. He never laments or desires to have anything; he is equally disposed to every living entity. In that state he attains pure devotional service unto Me.”

When one actually becomes spiritually advanced, he does not see the difference between one living entity and another. This platform is attained by determination. When perfect knowledge is expanded, one ceases to see the outward covering of the living entity. He sees, rather, the spirit soul within the body. Thus he does not make distinctions between a human being and an animal, a learned brāhmaṇa and a caṇḍāla:

vidyā-vinaya-sampanne
 brāhmaṇe gavi hastini
śuni caiva śvapāke ca
 paṇḍitāḥ sama-darśinaḥ

“The humble sage, by virtue of true knowledge, sees with equal vision a learned and gentle brāhmaṇa, a cow, an elephant, a dog and a dog-eater [outcaste].” (Bg. 5.18)

A learned person sees everyone equally on a spiritual basis, and a learned person, a devotee, wants to see everyone developed in Kṛṣṇa consciousness. The place where the Pracetās were residing was perfect for executing spiritual activities, for it is indicated that the great sage Jājali attained mukti (liberation) there. One desiring perfection or liberation should associate with a person who is already liberated. This is called sādhu-saṅga, associating with a perfect devotee.