Srimad-Bhagavatam: Canto 10 - Chapter 1 - Verse 38

Sanskrit:

विदाम योगमायास्ते दुर्दर्शा अपि मायिनाम् ।योगेश्वरात्मन् निर्भाता भवत्पादनिषेवया ॥ ३८ ॥

ITRANS:

vidāma yoga-māyās tedurdarśā api māyināmyogeśvarātman nirbhātābhavat-pāda-niṣevayā

Translation:

[Nārada said:] Now we understand Your mystic potencies, which are difficult to comprehend, even for great mystics, O Supreme Soul, master of all mystic power. Only by serving Your feet have I been able to perceive Your powers.

Purport:

According to the ācāryas, this verse indicates that even great mystics like Lord Brahmā and Lord Śiva cannot fully comprehend the mystic power of the Supreme Lord.