Chapter on Rulings on Forgetfulness (Sahw) in Prayer and What Requires Repeating of Prayer

Muhammad bin Ya‘qub, from Muhammad bin al-Husayn and Muhammad bin Isma‘il, from al-Fadl bin Shadhan, all from Safwan bin Yahya, from Abd al-Rahman bin al-Hajjaj, who said: I asked Abu Abdillah عليه السلام, peace be upon him, about a man who speaks forgetfully during the prayer and says, ‘Straighten your rows.’ Imam عليه السلام said: "He should complete his prayer, then perform two prostrations (sajdatay al-sahw)." I asked: "Are the two prostrations of forgetfulness before the ‘taslim’ or after it?" Imam عليه السلام said: "After it."