Bhagavad Gita 11.50
सञ्जय उवाच। इत्यर्जुनं वासुदेवस्तथोक्त्वा स्वकं रूपं दर्शयामास भूयः। आश्वासयामास च भीतमेनं भूत्वा पुनः सौम्यवपुर्महात्मा।।11.50।।
sañjaya uvāca| ityarjunaṃ vāsudevastathoktvā svakaṃ rūpaṃ darśayāmāsa bhūyaḥ| āśvāsayāmāsa ca bhītamenaṃ bhūtvā punaḥ saumyavapurmahātmā||11.50||
sanjaya uvaca ityarjunam vasudevastathoktva svakam rupam darshayamasa bhuyah ashvasayamasa ca bhitamenam bhutva punah saumyavapurmahatma11.50
Meaning
Sanjaya narrates: Having spoken thus, Krishna showed Arjuna His own form again, resuming His gentle, beautiful appearance, and comforted the terrified Arjuna.
संजय ने कहा — भगवान् वासुदेव ने अर्जुन से इस प्रकार कहकर, पुनः अपने (पूर्व) रूप को दर्शाया, और फिर, सौम्यरूप महात्मा श्रीकृष्ण ने इस भयभीत अर्जुन को आश्वस्त किया।
This is verse 50 of 55 in Chapter 11 (Vishwaroopa Darshana Yoga) of the Bhagavad Gita.