Bhagavad Gita Chapter 10.42
atha vā bahunaitena
kiḿ jñātena tavārjuna
viṣṭabhyāham idaḿ kṛtsnam
ekāḿśena sthito jagat
Translation
But what need is there, Arjuna, for all this detailed knowledge? With a single fragment of Myself I pervade and support this entire universe.