Bhagavad Gita · 11.52

श्रीभगवानुवाचसुदुर्दर्शमिदं रूपं दृष्टवानसि यन्मम।देवा अप्यस्य रूपस्य नित्यं दर्शनकाङ्क्षिणः॥

śhrī bhagavān uvācha su-durdarśham idaṁ rūpaṁ dṛṣhṭavān asi yan mama devā apy asya rūpasya nityaṁ darśhana-kāṅkṣhiṇaḥ

The Supreme Lord said: This form of mine that you have seen is very difficult to behold. Even the gods ever long to see this form.

— Bhagavad Gita 11.52

Source: Sacred-Texts.com (Sanskrit) + Bhagavad-Gita.io (translations)