Muwatta Malik 1432
موطأ مالك#1432Sahihحَدَّثَنِي 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 from his father that the Messenger of Allah, may Allah bless him and grant him peace, said, "There is no injury nor return of injury
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Salim al-HilaliSahih Lighairihi
In-book reference: 36:34