'A person was a guest of the Commander of the Faithful (AS) and stayed with him for some days. He then presented him with a prior dispute that he had not mentioned to the Commander of the Faithful (AS). The Imam said to him, 'Are you making a formal complaint?' He said, 'Yes.' The Imam said, 'Transfer from us [from our house], for the Messenger of Allah (SAWA) forbade the hosting of a plaintiff [for whom one is judge] unless the plaintiff is also with him.'