SB 8.6.9
rupam tavaitat purusarsabhejyam
sreyo ’rthibhir vaidika-tantrikena
yogena dhatah saha nas tri-lokan
pasyamy amusminn u ha visva-murtau
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
O best of persons, O supreme director, those who actually aspire for supreme good fortune worship this form of Your Lordship according to the Vedic Tantras. My Lord, we can see all the three worlds in You.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The Vedic mantras say: yasmin vijñate sarvam evam vijñatam bhavati (Mundaka Upanisad 1.3). When the devotee sees the Supreme Personality of Godhead by his meditation, or when he sees the Lord personally, face to face, he becomes aware of everything within this universe. Indeed, nothing is unknown to him. Everything within this material world is fully manifested to a devotee who has seen the Supreme Personality of Godhead. Bhagavad-gita (4.34) therefore advises:
tad viddhi pranipatena
pariprasnena sevaya
upadeksyanti te jñanam
jñaninas tattva-darsinah
“Just try to learn the truth by approaching a spiritual master. Inquire from him submissively and render service unto him. The self-realized soul can impart knowledge unto you because he has seen the truth.” Lord Brahma is one of these self-realized authorities (svayambhur naradah sambhuh kumarah kapilo manuh). One must therefore accept the disciplic succession from Lord Brahma, and then one can understand the Supreme Personality of Godhead in fullness. Here the word visva-murtau indicates that everything exists in the form of the Supreme Personality of Godhead. One who is able to worship Him can see everything in Him and see Him in everything.