The Messenger of Allah ﷺ said, "If people knew what I know about being alone, no rider would ever travel by night on his own."
حدثنا وكيع حدثنا عاصم بن محمد عن أبيه
قال رسول الله ﷺ لو يعلم الناس ما في الوحدة ما سار راكب بليل وحده أبدا
Its isnad is sahih, and it is a repetition of 4748.