الكافي- ط الاسلامية, volume 3, page 351

2. Ali ibn Ibrahim has narrated from his father from Hammad, from Hariz from Muhammad ibn Muslim who has said the following: “I once asked abu ‘Abd Allah (a.s.), about a man who performs Salah (prayer) but does not know if he has performed one or two (Rak‘at). He (the Imam) said, ‘He performs it again to ascertain that he has completed it and so also is the case with Friday, al-Maghrib and Salah (prayer) on a journey.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

3. Al-Husayn ibn Muhammad al-Ash’ariy has narrated from ‘Abd Allah ibn ‘Amir from Ali ibn Mahziyar from Fadalah ibn Ayyub from Sayf ibn ‘Amirah from abu Bakr al-Hadramiy who has said the following: “I once performed al-Maghrib Salah (prayer) with my people but after two Rak‘at I said the phrase of offering greeting of peace and someone from them said, ‘You performed only two Rak‘at.’ I performed it again. I then informed abu ‘Abd Allah (a.s.), about it and he said, ‘Perhaps you performed it again.’ I said, ‘Yes, I did so.’ He (the narrator) has said that he (the Imam) smiled and said, ‘You only had to stand up and perform one Rak‘at.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

4. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa from Yunus from a man who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘There is no confusion (acceptable) in al-Maghrib and morning Salah (prayer).”’

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

1. Muhammad ibn Yahya and others has narrated from Ahmad ibn Muhammad from al-Husayn ibn Sa‘id from Fadalah from al-Husayn ibn ‘Uthman from Sama‘ah from abu Basir who has said the following: “I once asked him (the Imam) (a.s.), about a man who performs Salah (prayer) but does not know if he is in the third or fourth Rak‘at. He (the Imam) said, ‘It depends on what his guessing indicates. If he according to his guess thinks it is the third or fourth he accepts it along with his soul, then performs two Rak‘at in which he reads al-Fatihah al-Kitab only.”’

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

2. It is a narration from him (narrator of previous Hadith) by Ahmad ibn al-Husayn from Fadalah from al-Husayn ibn abu al-‘Ala’ who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘If one’s guess settles on his performing three or four Rak‘at, he says the phrase of offering greeting of peace, then performs two Rak‘at and four Sujud (prostrations) with al-Fatihah al-Kitab in a sitting position and says Tashahhud (testimonies of belief).”’

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.

3. Ali ibn Ibrahim has narrated from his father and Muhammad ibn ’Isma‘il from al-Fadl ibn Shadhan all from Hammad ibn ‘Isa from Hariz from Zurarah who has said the following: “I once asked one of the two Imam, ‘Alayhim al-Salam, about a man who performs Salah (prayer) but does not know if he is in the second or fourth Rak‘at but he knows that he has performed two Rak‘at. He (the Imam) said, ‘He performs two Rak‘at and four Sujud (prostrations). He does it in a standing position with al-Fatihah al-Kitab and Tashahhud (testimonies of belief) and he is not obligated for anything in this matter. If he does not know he is in the third or fourth and if he has secured three Rak‘at, he stands up to perform one more Rak‘at and he is not obligated for anything in this matter. He does not destroy his certainty with doubt and doubt does not enter into certainty. No one of them mixes with the other but doubt is destroyed by certainty and he completes with certainty, based on certainty and does not depend on doubt in no condition whatsoever.’”

Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.