Abdullah bin Abbas (may Allah be pleased with him) says: A man left from Khaybar, two men started following him, and another one behind them, who was saying to them: "Stop, stop." (Until) he turned them back, then he caught up with the first man and informed him that these two were devils, I kept following them until I turned them back. When you reach the Messenger of Allah (peace and blessings be upon him), convey my greetings to him and inform him that we are collecting charity here; if it is suitable for you (peace and blessings be upon him), we will send it. That man reached Madinah and conveyed his message to the Prophet (peace and blessings be upon him). At that time, the Prophet (peace and blessings be upon him) forbade seclusion (being alone).