Sayyiduna Ismah (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) rode a horse, and it galloped with him. Then he (peace and blessings be upon him) came back to us and said: "I found it to be like a sea (swift in its pace)."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14563