Narrated AbdurRahman ibn AbuLayla:

The Companions of the Prophet ﷺ told us that they were travelling with the Prophet ﷺ. A man of them slept, and one of them went to the rope which he had with him. He took it, by which he was frightened. The Prophet ﷺ said: It is not lawful for a Muslim that he frightens a Muslim.

حَدَّثَنَا مُحَمَّدُ بْنُ سُلَيْمَانَ الأَنْبَارِيُّ، حَدَّثَنَا ابْنُ نُمَيْرٍ، عَنِ الأَعْمَشِ، عَنْ عَبْدِ اللَّهِ بْنِ يَسَارٍ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ أَبِي لَيْلَى، قَالَ حَدَّثَنَا أَصْحَابُ، مُحَمَّدٍ ﷺ أَنَّهُمْ كَانُوا يَسِيرُونَ مَعَ النَّبِيِّ ﷺ فَنَامَ رَجُلٌ مِنْهُمْ فَانْطَلَقَ بَعْضُهُمْ إِلَى حَبْلٍ مَعَهُ فَأَخَذَهُ فَفَزِعَ فَقَالَ رَسُولُ اللَّهِ ﷺ " لاَ يَحِلُّ لِمُسْلِمٍ أَنْ يُرَوِّعَ مُسْلِمًا " .