Sahih Muslim 602
Sahih Muslim · Book 5: The Book of Mosques and Places of Prayer · It is recommended to come to prayers in a tranquil and dignified manner, and it is forbidden to come in a hasty manner
Abu Huraira reported:
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ ، حَدَّثَنَا الْفُضَيْلُ، - يَعْنِي ابْنَ عِيَاضٍ - عَنْ هِشَامٍ ، ح قَالَ وَحَدَّثَنِي زُهَيْرُ بْنُ حَرْبٍ ، - وَاللَّفْظُ لَهُ - حَدَّثَنَا إِسْمَاعِيلُ بْنُ إِبْرَاهِيمَ ، حَدَّثَنَا هِشَامُ بْنُ حَسَّانَ ، عَنْ مُحَمَّدِ بْنِ سِيرِينَ ، عَنْ أَبِي هُرَيْرَةَ ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِذَا ثُوِّبَ بِالصَّلاَةِ فَلاَ يَسْعَ إِلَيْهَا أَحَدُكُمْ وَلَكِنْ لِيَمْشِ وَعَلَيْهِ السَّكِينَةُ وَالْوَقَارُ صَلِّ مَا أَدْرَكْتَ وَاقْضِ مَا سَبَقَكَ " .
The Messenger of Allah (ﷺ) said: When the words of Iqama are pronounced, none of you should run to it (to join the prayer) but walk with tranquillity and dignity, and pray what you are in time for and complete what has gone before (what the Imam has completed).