Bhagavad Gita - Chapter 11 : Vishva Rupa Darshana Yoga

Visvarupa–Darsana yoga (The Manifesting of the One and Manifold contains 55 verses): On Arjuna's request, Krishna displays his "universal form" (Viśvarūpa), a theophany of a being facing every way and emitting the radiance of a thousand suns, containing all other beings and material in existence.

Srimad Bhagavad Gita
Sanskrit: श्रीमद्भगवद्गीता , Śrīmadbhagavadgītā,

literally meaning The Song of the Bhagavan, often referred to as simply the Gita, is a 700-verse Hindu scripture that is part of the Hindu epic Mahabharata.