Musnad Ahmad 1467

It was narrated from Dawood bin ‘Amir bin Sa"d bin Abi Waqqas, from his father, from his grandfather, that The Prophet (ﷺ) said: “If less than a fingernail sized piece of what is in Paradise could appear, it would adorn everything in all directions between heaven and Earth. And if a man from among the people of Paradise were to look out and his bracelets were to appear, their light would outshine the light of the sun as the light of the sun outshines the light of the stars."