حَدَّثَنَا أَحْمَدُ بْنُ إِبْرَاهِيمَ حَدَّثَنَا حَجَّاجٌ عَنْ ابْنِ جُرَيْجٍ أَخْبَرَنِي عَبْدُ اللَّهِ بْنُ مُسَافِعٍ أَنَّ مُصْعَبَ بْنَ شَيْبَةَ أَخْبَرَهُ عَنْ عُتْبَةَ بْنِ مُحَمَّدِ بْنِ الْحَارِثِ عَنْ عَبْدِ اللَّهِ بْنِ جَعْفَرٍ أَنَّ رَسُولَ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ قَالَ مَنْ شَکَّ فِي صَلَاتِهِ فَلْيَسْجُدْ سَجْدَتَيْنِ بَعْدَمَا يُسَلِّمُ
سنن ابودوٗد · Hadith 1033
Narrated Abdullah ibn Jafar: The Prophet ﷺ said: Anyone who is in doubt in his prayer should make two prostrations after giving the salutation.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020