With this chain of transmission, from Hammad, from Hariz, from Muhammad ibn Muslim. He said:
I asked Abu Abdullah عليه السلام about a dog that touches a part of a man's body. Imam عليه السلام said: "He should wash the area that was touched."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 276