(28) باب تَسْوِيَةِ الصُّفُوفِ وَإِقَامَتِهَا وَفَضْلِ الأَوَّلِ فَالأَوَّلِ مِنْهَا وَالاِزْدِحَامِ عَلَى الصَّفِّ الأَوَّلِ وَالْمُسَابَقَةِ إِلَيْهَا وَتَقْدِيمِ أُولِي الْفَضْلِ وَتَقْرِيبِهِمْ مِنَ الإِمَامِ
Anas b. Malik reported:
The Messenger of Allah (ﷺ) said: Complete the rows, for I can see you behind my back. (ID)
Reference (ID): Sahih Muslim 434 (ID)
In-book reference (ID): Book 4, Hadith 138 (ID)
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 872 (ID)