Through this same chain of transmission, from Al-Husayn ibn Sa'id, from Safwan, from Al-'Ala', from Muhammad ibn Muslim, from one of the two Imams عليه السلام, who said: I asked Imam عليه السلام about a man who shakes hands with a Magian (Zoroastrian). Imam عليه السلام replied: "He should wash his hand, but he does not need to perform ablution (wudu)."