Chandobhai: Jyoti has, jyoti has to come through source, correct.
Prabhupāda: Yes. And that is confirmed in the Brahmā-saṁhitā that yasya prabhā. Yasya prabhā prabhavato jagadaṇḍa-koṭi-koṭiṣv aśeṣa-vasudhādi vibhūti-bhinnam (Bs. 5.40). This creation, all the whole creation, even this material, that is depending on the brahma-jyotir. Therefore it is said, sarvaṁ khalv idaṁ brahma. Everything is depending on the brahma-jyotir. And that is confirmed also in the Bhagavad-gītā: mat-sthāni sarva-bhūtāni (BG 9.4). This mat-sthāni means...
Chandobhai: Within the Brahman.
Prabhupāda: Within the Brahman. And this Brahman is the effulgence of body of Kṛṣṇa.