As the sun rays are concentrated in the sun disc, the brahmajyoti is concentrated in Goloka Vrndavana, the topmost spiritual planet in the spiritual sky

Expressions researched:
"As the sun rays are concentrated in the sun disc, the brahmajyoti is concentrated in Goloka Vṛndāvana, the topmost spiritual planet in the spiritual sky. T"

Srimad-Bhagavatam

SB Canto 2

Part of this all-pervasive brahmajyoti, which is compared to the sun rays, is covered by the darkness of the mahat-tattva, and this insignificant part is known as the material world. In this material world there are innumerable universes like the one we can experience, and in each of them there are hundreds of thousands of planets like the one we are inhabiting. The mundaners are more or less captivated by the unlimited expansion of the rays of the Lord, but the devotees are concerned more with His personal form, from which everything is emanating (janmādy asya yataḥ (SB 1.1.1)). As the sun rays are concentrated in the sun disc, the brahmajyoti is concentrated in Goloka Vṛndāvana, the topmost spiritual planet in the spiritual sky.

SB 2.4.14, Translation and Purport

Let me offer my respectful obeisances unto Him who is the associate of the members of the Yadu dynasty and who is always a problem for the nondevotees. He is the supreme enjoyer of both the material and spiritual worlds, yet He enjoys His own abode in the spiritual sky. There is no one equal to Him because His transcendental opulence is immeasurable.

There are two sides of the transcendental manifestations of the Supreme Lord, Śrī Kṛṣṇa. For the pure devotees He is the constant companion, as in the case of His becoming one of the family members of the Yadu dynasty, or His becoming the friend of Arjuna, or His becoming the associate neighbor of the inhabitants of Vṛndāvana, as the son of Nanda-Yaśodā, the friend of Sudāmā, Śrīdāmā and Madhumaṅgala, or the lover of the damsels of Vrajabhūmi, etc.