Abu Dawud
General Behavior
Book Number: 036 / Hadith Number: 4986
Narated By AbdurRahman ibn AbuLayla : The Companions of the Prophet (pbuh) told us that they were travelling with the Prophet (pbuh). 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 (pbuh) said: It is not lawful for a Muslim that he frightens a Muslim.