3. Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan and Ali ibn Ibrahim has narrated from his father from all from Hammad ibn ‘Isa from Hariz from Zurarah who has said the following:

“I once said to one of the two Imam , ‘There is a man who does not know if he has performed one or two. He (the Imam) said, ‘He performs his Salah (prayer) again.’ I then asked, ‘There is a man who does not know if he has performed two or three. He (the Imam) said, ‘If he doubts after entering the third Rak‘at, he continues his Salah (prayer), then performs one more (Rak‘at); and he is not obligated for anything in this matter and he says the phrase of offering greeting of peace.’ I then asked, ‘One does not know if it is the second or fourth (Rak‘at).’ He (the Imam) said, ‘He says the phrase of offering greeting of peace and performs two Rak‘at, says the phrase of offering greeting of peace and he is not obligated for anything in this matter.’”