Bṛhad-bhāgavatāmṛta Part 1 Chapter 5 Text 8

yo brahma-rudrādi-samādhi-durlabho

vedokti-tātparya-viśeṣa-gocaraḥ

śrīmān nṛsiṁhaḥ kila vāmanaś ca

śrī-rāghavendro ’pi yad-aṁśa-rūpaḥ

TRANSLATION

For Brahmā, Rudra, and other demigods He is difficult to realize even in advanced meditation. He can be known through the words of the Vedas only when one understands their special purport. Śrīmān Nṛsiṁha, Śrī Vāmana, and Śrī Rāghavendra are His plenary expansions.