B.G 2.46
यावानर्थ उदपाने सर्वतः सम्प्लुतोदके। तावान्सर्वेषु वेदेषु ब्राह्मणस्य विजानतः ॥२-४६॥
yāvānartha udapānē sarvataḥ samplutōdakē। tāvānsarvēṣu vēdēṣu brāhmaṇasya vijānataḥ ॥2-46॥
That purpose realized in a well is more than served by the vast pond of water. Similarly, what is realized through all the Vēdas, is obtained by a learned man who has transcendental knowledge.
Gīta Bhāshya 2.46
Those who perform actions without desire also get the results, but without misery. 'brāhmaṇa' is the one with transcendental knowledge, indicated by the word 'vijānataḥ'. Just listening to such a knowledgeable Brahmin also gets results of studying all the Vēdas.
If doubt arises, what if results of action with desire are not obtained by the knowledgeable? It is answered by 'yāvānartha' verse.
It means, whatever utility one gets from deep well, same utility is served by a large pond. Similarly, the results one gets by all the Vēdas is included in the knowledge one gets from the wise intellectual, a brahmin.
One who has grasped Brahman, i.e. the supreme lord, is called 'brāhmaṇa'. He is possessed with transcendental knowledge. Only he (one possessed with transcendental knowledge) goes to Brahman. The word 'vijānataḥ' shows his speciality is because of his transcendental knowledge.
