His mother, Yashoda, coming up to him with a wagging finger, scolds him: “You shouldn’t eat dirt, you naughty boy.” “But I haven’t,” says the unchallenged Lord of all and everything, disguised as a frightened human child. “Tut! Tut! Open your mouth,” orders Yashoda.

Krishna does as he is told. He opens his mouth, and Yashoda gasps. She sees in Krishna’s mouth the whole complete entire timeless universe, all the stars and planets of space and the distance between them, all the lands and seas of the Earth and the life in them.

She sees all the days of yesterday and all the days of tomorrow; she sees all ideas and all emotions, all pity and all hope, and the three strands of matter; not a pebble, candle, creature, village, or galaxy is missing, including herself and every bit of dirt in its truthful place.

Quoted directly from https://iskcondwarka.org