Narrated Abu Huraira: The Prophet, said, "Allah said, 'I have prepared for My pious worshipers such things as no eye has ever seen, no ear has ever heard of, and nobody has ever thought of. All that is reserved, besides which, all that you have seen, is nothing." Then he recited:-- 'No soul knows what is kept hidden (in reserve) for them of joy as a reward for what they used to do.' (32.17)
The chain is ordered from the source of the saying to the compiler: 1 = the speaker/first transmitter, the following links those who passed it on in turn, and at the bottom al-Bukhari who compiled the work. Click a narrator to list every hadith in which he appears; the number in parentheses is how many hadiths across the collections on this site the narrator appears in.