5. Hammad has narrated from Hariz from Muhammad ibn Muslim who has said the following: “He (the Imam) عليه السلام, has said, ‘The case of doubt whether it is three or four or if it is two or four is of the same position. If one doubts and does not know if he has performed three or four and his doubt about both sides are equal’, he (the Imam) said, ‘Such person stands up and completes (Salah (prayer)). He then sits down, says Tashahhud (testimonies of belief) and the phrase of offering greeting of peace then performs two Rak’ah and four Sujud (prostrations) in a sitting position. If his doubt has a greater side toward four, he says Tashahhud (testimonies of belief) and the phrase of offering greeting of peace then reads al-Fatihah al-Kitab and performs Ruku’ (bowing down on one’s knees) and Sajdah (prostration) then reads and performs two Sajdah (prostration), says Tashahhud (testimonies of belief) and the phrase of offering greeting of peace. If the greater side of his doubt is toward two Rak’ah, he stands up, performs two Rak’ah, says Tashahhud (testimonies of belief) and the phrase of offering greeting of peace.’”