الكافي 1/4/124/19

19. Ishaq has said that narrated to me Yahya ibn al-Qushayri from the town called Qir the following. “Abu Muhammad عليه السلام had an agent who lived in a room in the house with white servant of the Imam عليه السلام . the agent invited the servant to have evil activities with him and the servant refused to do so unless he brought him wine. The agent managed to find wine and take it to him. There were three closed doors between them and the quarters of the Imam عليه السلام . The narrator has said that the agent narrated to me that was awake and I saw the doors open until I saw the Imam عليه السلام in person standing at the door. He then said, “O you have fear of Allah and be pious before Him. In the morning he ordered to sell the servant and discharge me from the job.”