حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَمْرِو بْنِ يَحْيَى الْمَازِنِيِّ، عَنْ أَبِيهِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ لاَ ضَرَرَ وَلاَ ضِرَارَ ‏"‏ ‏.‏

Yahya related to me from Malik from Amr ibn Yahya al-Mazini fromhis father that the Messenger of Allah, may Allah bless him and granthim peace, said, "There is no injury nor return of injury." Translation Not Available

Book Ref: Muwatta Imam Malik Book 36 Hadith 1435
Web Ref:  Muwatta Imam Malik Book 36 Hadith 31