SB 2.4.14
namo namas te ’stv rsabhaya satvatam
vidura-kasthaya muhuh kuyoginam
nirasta-samyatisayena radhasa
sva-dhamani brahmani ramsyate namah
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
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.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
There are two sides of the transcendental manifestations of the Supreme Lord, Sri Krsna. 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 Vrndavana, as the son of Nanda-Yasoda, the friend of Sudama, Sridama and Madhumangala, or the lover of the damsels of Vrajabhumi, etc. That is part of His personal features. And by His impersonal feature He expands the rays of the brahmajyoti, which is limitless and all-pervasive. 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 (janmady asya yatah). 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. The immeasurable spiritual sky is full of spiritual planets, named Vaikunthas, far beyond the material sky. The mundaners have insufficient information of even the mundane sky, so what can they think of the spiritual sky? Therefore the mundaners are always far, far away from Him. Even if in the future they are able to manufacture some machine whose speed may be accelerated to the velocity of the wind or mind, the mundaners will still be unable to imagine reaching the planets in the spiritual sky. So the Lord and His residential abode will always remain a myth or a mysterious problem, but for the devotees the Lord will always be available as an associate.
In the spiritual sky His opulence is immeasurable. The Lord resides in all the spiritual planets, the innumerable Vaikuntha planets, by expanding His plenary portions along with His liberated devotee associates, but the impersonalists, who want to merge in the existence of the Lord, are allowed to merge as one of the spiritual sparks of the brahmajyoti. They have no qualifications for becoming associates of the Lord either in the Vaikuntha planets or in the supreme planet, Goloka Vrndavana, described in the Bhagavad-gita as mad-dhama and here in this verse as the sva-dhama of the Lord.
This mad-dhama or sva-dhama is described in the Bhagavad-gita (15.6) as follows:
na tad bhasayate suryo
na sasanko na pavakah
yad gatva na nivartante
tad dhama paramam mama
The Lord’s sva-dhama does not require any sunlight or moonlight or electricity for illumination. That dhama, or place, is supreme, and whoever goes there never comes back to this material world.
The Vaikuntha planets and the Goloka Vrndavana planet are all self-illuminating, and the rays scattered by those sva-dhama of the Lord constitute the existence of the brahmajyoti. As further confirmed in the Vedas like the Mundaka Upanisad (2.2.10), Katha Upanisad (2.2.15) and Svetasvatara Upanisad (6.14):
na tatra suryo bhati na candra-tarakam
nema vidyuto bhanti kuto ’yam agnih
tam eva bhantam anubhati sarvam
tasya bhasa sarvam idam vibhati
In the sva-dhama of the Lord there is no need of sun, moon or stars for illumination. Nor is there need of electricity, so what to speak of ignited lamps? On the other hand, it is because those planets are self-illuminating that all effulgence has become possible, and whatever there is that is dazzling is due to the reflection of that sva-dhama.
One who is dazzled by the effulgence of the impersonal brahmajyoti cannot know the personal transcendence; therefore in the Isopanisad (15) it is prayed that the Lord shift His dazzling effulgence so that the devotee can see the real reality. It is spoken thus:
hiranmayena patrena
satyasyapihitam mukham
tat tvam pusann apavrnu
satya-dharmaya drstaye
“O Lord, You are the maintainer of everything, both material and spiritual, and everything flourishes by Your mercy. Your devotional service, or bhakti-yoga, is the actual principle of religion, satya-dharma, and I am engaged in that service. So kindly protect me by showing Your real face. Please, therefore, remove the veil of Your brahmajyoti rays so that I can see Your form of eternal bliss and knowledge.”