“The Messenger of Allah ﷺ said: ‘The covenant that distinguishes between us and them is prayer; so whoever leaves it, he has committed Kufr.’” (Using translation from Ibn Mājah 1079)  

قَالَ رَسُولُ اللهِ ﷺ إِنَّ «الْعَهْدَ الَّذِي بَيْنَنَا وَبَيْنَهُمُ الصَّلَاةَ فَمَنْ تَرَكَهَا فَقَدْ كَفَرَ»  

"The Messenger of Allah ﷺ said: 'You may live to meet people who will be offering the prayer outside its (prayer) time. If you meet them, then offer the prayer on time, then pray with them and make that a voluntary prayer."' (Using translation from Nasāʾī 779)  

قَالَ رَسُولُ اللهِ ﷺ «لَعَلَّكُمْ سَتُدْرِكُونَ أَقْوَامًا يُصَلُّونَ الصَّلَاةَ لِغَيْرِ وَقْتِهَا فَإِذَا أَدْرَكْتُمُوهُمْ فَصَلَّوَا الصَّلَاةَ لِوَقْتِهَا وَصَلَّوْا مَعَهُمْ وَاجْعَلُوهَا سُبْحَةً»  

"The Messenger of Allah ﷺ said: 'There is nothing between a person and disbelief except abandoning Salah.'" (Using translation from Nasāʾī 464)  

قَالَ رَسُولُ اللهِ ﷺ «لَيْسَ بَيْنَ الْعَبْدِ وَبَيْنَ الْكُفْرِ إِلَّا تَرْكُ الصَّلَاةِ»