(28) باب تَسْوِيَةِ الصُّفُوفِ وَإِقَامَتِهَا وَفَضْلِ الأَوَّلِ فَالأَوَّلِ مِنْهَا وَالاِزْدِحَامِ عَلَى الصَّفِّ الأَوَّلِ وَالْمُسَابَقَةِ إِلَيْهَا وَتَقْدِيمِ أُولِي الْفَضْلِ وَتَقْرِيبِهِمْ مِنَ الإِمَامِ
Nu'man b. Bashir reported:
I heard the Messenger of Allah (ﷺ) say: Straighten your rows, or Allah would create dissension amongst you. (ES)
Reference (ES): Sahih Muslim 436 a (ES)
In-book reference (ES): Book 4, Hadith 140 (ES)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 874 (ES)