Sunan an-Nasa'i 815
سنن النسائي#815Sahihأَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ الْمُبَارَكِ الْمُخَرِّمِيُّ، قَالَ حَدَّثَنَا أَبُو هِشَامٍ، قَالَ حَدَّثَنَا أَبَانُ، قَالَ حَدَّثَنَا قَتَادَةُ، قَالَ حَدَّثَنَا أَنَسٌ، أَنَّ نَبِيَّ اللَّهِ صلى الله عليه وسلم قَالَ " رَاصُّوا صُفُوفَكُمْ وَقَارِبُوا بَيْنَهَا وَحَاذُوا بِالأَعْنَاقِ فَوَالَّذِي نَفْسُ مُحَمَّدٍ بِيَدِهِ إِنِّي لأَرَى الشَّيَاطِينَ تَدْخُلُ مِنْ خَلَلِ الصَّفِّ كَأَنَّهَا الْحَذَفُ " .
Anas narrated that the Prophet (ﷺ) said:"Make your rows solid and close together, and keep your necks in line. By the One in Whose Hand is the soul of Muhammad! I can see the shaitan entering through the gaps in the rows as if they are small sheep
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 10:39