عن أبي سعيد الخدري رضي الله عنه أن رسول الله -صلى الله وعليه وسلم- قال: «لا ضَرَرَ ولا ضِرَارَ».
Abu Sa‘īd al-Khudri (may Allah be pleased with him) reported that the Prophet (may Allah's peace and blessings be upon him) said: ''There should be neither harm nor reciprocating harm.''
This Hadīth constitutes an Islamic principle related to laws, ethics, and dealing with others. That is not to harm anyone in any way, for it is forbidden to inflict harm, and it is mandatory to eliminate harm, and a harm can not be eliminated by a harm, and harming is forbidden.