عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ مُحَمَّدِ بْنِ عِيسَى عَنْ يُونُسَ عَنْ عَبْدِ اللَّهِ بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ اللَّهِ ع قَالَ:
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إِذَا كُنْتَ لَا تَدْرِي أَرْبَعاً صَلَّيْتَ أَوْ خَمْساً فَاسْجُدْ سَجْدَتَيِ السَّهْوِ بَعْدَ تَسْلِيمِكَ ثُمَّ سَلِّمْ بَعْدَهُمَا.
Read English translationHide English translationMuhammad Sarwar — attributed by Thaqalayn
3. Ali ibn Ibrahim has narrated from Muhammad ibn ‘Isa from Yunus ibn ‘Abd al-Rahman from ‘Abd Allah ibn Sinan who has said the following: “Abu ‘Abd Allah (a.s.), has said, ‘If you do not know whether you have performed four or five; then perform two Sujud (prostrations) because of mistake after Salam (the phrase of offering greeting of peace) and after the two Sujud (prostrations), say Salam.’”
Translation: Muhammad Sarwar — attributed by Thaqalayn·The Arabic above is the original.
Hadith gradings
1- حسنAllamah Baqir al-MajlisiMirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (5/200)