Mustadrak al-Hakim — Hadith 3719

It is narrated from Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) that he said: "You see a man walking about in the markets while his name has already been entered in the list of the dead." Then he recited these verses: "Indeed, We sent it down on a blessed night; indeed, We have ever been warning. On that night every wise matter is decided." [Surah al-Dukhan: 3 - 4] Meaning the Night of Decree (Laylat al-Qadr). He said: On that very night the affairs of the world are decided until the coming year.
This hadith is sahih (authentic) in its chain of narration, and the two Shaykhs (Bukhari and Muslim) did not record it.