Hadith 4.2
Retaliation
Ibn Abu Laila said he was told by Muhammad’s companions that during a journey with God’s Messenger while one of them was asleep another went to a rope he had with him and seized him,* with the result that he was startled. God’s Messenger then said, “It is not lawful for a Muslim to frighten another.” Abu Dawud transmitted it. * The meaning is that he tied the rope round him while he was asleep, presumably as a joke.
وَعَنِ ابْنِ أَبِي لَيْلَى قَالَ: حَدَّثَنَا أَصْحَابُ مُحَمَّدٍ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنَّهُمْ كَانُوا يَسِيرُونَ مَعَ رَسُولِ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَنَامَ رَجُلٌ مِنْهُمْ فَانْطَلَقَ بَعْضُهُمْ إِلَى حَبْلٍ مَعَه فَأَخذه فَفَزعَ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَا يَحِلُّ لِمُسْلِمٍ أَنْ يُرَوِّعَ مُسْلِمًا» . رَوَاهُ أَبُو دَاوُد
Hadith gradings, numbering and translations can differ between editions. For legal rulings or detailed interpretation, consult qualified scholarship and the referenced edition.