All śāstric injunctions, as well as the versions of great sages and authorities, establish that a bona fide spiritual master is not necessarily a brāhmaṇa by caste. The only qualification is that he be conversant with the science of Kṛṣṇa, Kṛṣṇa consciousness. That alone makes one perfectly eligible to become a spiritual master.
-Teachings of Lord Caitanya, Chapter 31

निगमकल्पतरोर्गलितं फलं
शुकमुखादमृतद्रवसंयुतम् ।
पिबत भागवतं रसमालयं
मुहुरहो रसिका भुवि भावुका: ॥ ३ ॥
O expert and thoughtful men, relish Śrīmad-Bhāgavatam, the mature fruit of the desire tree of Vedic literatures. It emanated from the lips of Śrī Śukadeva Gosvāmī. Therefore this fruit has become even more tasteful, although its nectarean juice was already relishable for all, including liberated souls.
-SB 1.1.3