حَدَّثَنَا النُّفَيْلِيُّ، حَدَّثَنَا مُحَمَّدُ بْنُ سَلَمَةَ، عَنْ خُصَيْفٍ، عَنْ أَبِي عُبَيْدَةَ بْنِ عَبْدِ اللَّهِ، عَنْ أَبِيهِ، عَنْ رَسُولِ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ إِذَا كُنْتَ فِي صَلاَةٍ فَشَكَكْتَ فِي ثَلاَثٍ أَوْ أَرْبَعٍ وَأَكْبَرُ ظَنِّكَ عَلَى أَرْبَعٍ تَشَهَّدْتَ ثُمَّ سَجَدْتَ سَجْدَتَيْنِ وَأَنْتَ جَالِسٌ قَبْلَ أَنْ تُسَلِّمَ ثُمَّ تَشَهَّدْتَ أَيْضًا ثُمَّ تُسَلِّمُ ‏"‏ ‏.‏ قَالَ أَبُو دَاوُدَ رَوَاهُ عَبْدُ الْوَاحِدِ عَنْ خُصَيْفٍ وَلَمْ يَرْفَعْهُ وَوَافَقَ عَبْدَ الْوَاحِدِ أَيْضًا سُفْيَانُ وَشَرِيكٌ وَإِسْرَائِيلُ وَاخْتَلَفُوا فِي الْكَلاَمِ فِي مَتْنِ الْحَدِيثِ وَلَمْ يُسْنِدُوهُ ‏.‏
Translation
AbuUbaydah reported, on the authority of his father Abdullah (ibn Mas'ud), the Messenger of Allah (ﷺ) as saying

Abu Dawud said: This tradition has been narrated by 'Abd al-Wahid from Khusaif, but he did not report it as a statement of the Prophet (ﷺ). The version of 'Abd al-Wahid has been corroborated by Sufyan, Sharik, and Isra'il. They differed amongst themselves about the text of the tradition and they did not narrate it with the continuous chain up to the Prophet (ﷺ).