وَعَنْ اِبْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا
قَالَ: قَالَ رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ -«لَا ضَرَرَ وَلَا ضِرَارَ»
The Messenger of Allah (sallallahu alayhi wa sallam) said: “There should neither be harming (of others without cause), nor reciprocating harm (between two parties).”.