《论衡·卷二十五·解除篇》
病人与鬼战斗，鬼尚且不离去，宅主用解除法驱鬼，鬼神必然不会离去。
病人战斗，鬼犹不去，宅主解除，鬼神必不离。
The ghosts stay even after the patient has fought with them, so the ghosts will certainly not leave if the master of the house tries to exorcise them.