Bhagavad Gita Chapter 11.53
nāhaḿ vedair na tapasā
na dānena na cejyayā
śakya evaḿ-vidho draṣṭuḿ
dṛṣṭavān asi māḿ yathā
Translation
The form you are seeing with your transcendental eyes cannot be understood simply by studying the Vedas, nor by undergoing serious penances, nor by charity, nor by worship. It is not by these means that one can see Me as I am.