Srimad-Bhagavatam: Canto 3 - Chapter 1 - Verse 8


तावत्प्रसन्नो भगवान् पुष्कराक्ष: कृते युगे ।दर्शयामास तं क्षत्त: शाब्दं ब्रह्म दधद्वपु: ॥ ८ ॥


tāvat prasanno bhagavānpuṣkarākṣaḥ kṛte yugedarśayām āsa taṁ kṣattaḥśābdaṁ brahma dadhad vapuḥ


Then, in the Satya-yuga, the lotus-eyed Supreme Personality of Godhead, being pleased, showed Himself to that Kardama Muni and displayed His transcendental form, which can be understood only through the Vedas.


Here two points are very significant. The first is that Kardama Muni attained success by yoga practice in the beginning of Satya-yuga, when people used to live for one hundred thousand years. Kardama Muni attained success, and the Lord, being pleased with him, showed him His form, which is not imaginary. Sometimes the impersonalists recommend that one can arbitrarily concentrate one’s mind on some form he imagines or which pleases him. But here it is very clearly said that the form which the Lord showed to Kardama Muni by His divine grace is described in the Vedic literature. Śābdaṁ brahma: the forms of the Lord are clearly indicated in the Vedic literature. Kardama Muni did not discover any imaginary form of God, as alleged by rascals; he actually saw the eternal, blissful and transcendental form of the Lord.