śrī bhagavān uvāca sudurdarśam idaṃ rūpaṃ dṛṣṭavān asi yan mama | devā apy asya rūpasya nityam darśana-kāṅkṣaṇaḥ || 52 ||
Translation
It is extremely difficult to behold this manifestation of Mine which you have seen. Even the gods ever long to behold this manifestation.
Purport
Bhagvan Krishna now returns back to his human form as he incarnated as the son of Vasudeva and Devaki. But He(Shri Krishna) explained to Arjuna, the universal form he just saw is extremely rare and not been seen even by deities
