Hadith 43:216
Sahih (Al-Albani)
Anas said:
The people of Madina were started. The Messenger of Allah (May peace be upon him) rode on the horse belonging to Abu Talhah. He said: We did not see anything, or he said: we did not see (find) any fear. I found it (could run) like a river.
حَدَّثَنَا عَمْرُو بْنُ مَرْزُوقٍ، أَخْبَرَنَا شُعْبَةُ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، قَالَ كَانَ فَزَعٌ بِالْمَدِينَةِ فَرَكِبَ رَسُولُ اللَّهِ صلى الله عليه وسلم فَرَسًا لأَبِي طَلْحَةَ فَقَالَ " مَا رَأَيْنَا شَيْئًا " . أَوْ " مَا رَأَيْنَا مِنْ فَزَعٍ وَإِنْ وَجَدْنَاهُ لَبَحْرًا "
Original Reference: Sunan Abi Dawud 4988