SB 11.17.31
yady asau chandasam lokam
aroksyan brahma-vistapam
gurave vinyased deham
svadhyayartham brhad-vratah
Translation:
If the brahmacari student desires to ascend to the Maharloka or Brahmaloka planets, then he should completely surrender his activities to the spiritual master and, observing the powerful vow of perpetual celibacy, dedicate himself to superior Vedic studies.
Purport:
One who desires the supreme perfection of life must engage his body, mind and words in the service of a bona fide spiritual master. One desiring elevation to superior planets
such as Brahmaloka and Maharloka must fully engage in the spiritual master’s service. We can thus imagine the sincerity of purpose and service required to achieve the Krsnaloka planet, which lies far beyond the material universe.