حَدَّثَنَا أَبُو الْوَلِيدِ الطَّيَالِسِيُّ، حَدَّثَنَا شُعْبَةُ، عَنْ سَعْدِ بْنِ إِبْرَاهِيمَ، قَالَ سَمِعْتُ أَبَا سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ ‏"‏ ائْتُوا الصَّلاَةَ وَعَلَيْكُمُ السَّكِينَةُ فَصَلُّوا مَا أَدْرَكْتُمْ وَاقْضُوا مَا سَبَقَكُمْ ‏"‏ ‏.‏ قَالَ أَبُو دَاوُدَ وَكَذَا قَالَ ابْنُ سِيرِينَ عَنْ أَبِي هُرَيْرَةَ ‏"‏ وَلْيَقْضِ ‏"‏ ‏.‏ وَكَذَا أَبُو رَافِعٍ عَنْ أَبِي هُرَيْرَةَ وَأَبُو ذَرٍّ رُوِيَ عَنْهُ ‏"‏ فَأَتِمُّوا وَاقْضُوا ‏"‏ ‏.‏ وَاخْتُلِفَ عَنْهُ ‏.‏

Abu Hurairah reported the Prophet(PBUH) as saying: Come to prayer with calmness and tranquility. Then pray the part you get (long with the imam) and complete afterwards the part you miss. Abu Dawud said: Ibn Sirin narrated from Abu Hurairah the words: "he should complete it afterwards." Similarly, Abu Rafi' narrated from Abu Hurairah and Abu Dharr narrated from him the words "then complete it, and complete it afterwards." There is a variation of words in the narration from him. Translation Not Available

Book Ref: Sunan Abi Dawud Book 2 Hadith 573
Web Ref:  Sunan Abi Dawud Book 2 Hadith 573