Sunan an-Nasa'i, Volume 1, Book 10, Hadith 862 (DarusSalam) ⓘ
It was narrated that Abu Hurairah said: "The Messenger of said: 'When you come to pray, do not come rushing; come walking in a dignified manner, and whatever you catch up with, pray, and whatever you miss, make it up."'
أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ الزُّهْرِيُّ، قَالَ حَدَّثَنَا سُفْيَانُ، حَدَّثَنَا الزُّهْرِيُّ، عَنْ سَعِيدٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا أَتَيْتُمُ الصَّلاَةَ فَلاَ تَأْتُوهَا وَأَنْتُمْ تَسْعَوْنَ وَأْتُوهَا تَمْشُونَ وَعَلَيْكُمُ السَّكِينَةُ فَمَا أَدْرَكْتُمْ فَصَلُّوا وَمَا فَاتَكُمْ فَاقْضُوا " .
also referenced under: Hadith 861 (Reference) & Book 10, Hadith 85 (In-Book)