Abu Hurairah reported the Prophet ﷺ 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.

حَدَّثَنَا أَبُو الْوَلِيدِ الطَّيَالِسِيُّ، حَدَّثَنَا شُعْبَةُ، عَنْ سَعْدِ بْنِ إِبْرَاهِيمَ، قَالَ سَمِعْتُ أَبَا سَلَمَةَ، عَنْ أَبِي هُرَيْرَةَ، عَنِ النَّبِيِّ ﷺ 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 .