Abu Huraira reported:
The Messenger of Allah (ﷺ) said: I have been helped by terror (in the heart of the enemy) ; I have been given words which are concise but comprehensive in meaning; and while I was asleep I was brought the keys of the treasures of the earth which were placed in my hand. (FR)
Reference (FR): Sahih Muslim 523 e (FR)
In-book reference (FR): Book 5, Hadith 11 (FR)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1066 (FR)