Muwatta Malik 1155
موطأ مالك#1155Da'ifThese are the words of a Companion, not of the Prophet ﷺ. The chain is graded on its own terms.
وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ عَلِيَّ بْنَ أَبِي طَالِبٍ، كَانَ يَقُولُ فِي الرَّجُلِ يَقُولُ لاِمْرَأَتِهِ أَنْتِ عَلَىَّ حَرَامٌ إِنَّهَا ثَلاَثُ تَطْلِيقَاتٍ . قَالَ مَالِكُ وَذَلِكَ أَحْسَنُ مَا سَمِعْتُ فِي ذَلِكَ .
Yahya related to me from Malik that he had heard that Ali ibn Abi Talib used to say that if a man said to his wife, "You are haram for me," it counted as three pronouncements of divorce. Malik said, "That is the best of what I have heard on the subject
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:
In-book reference: 29:6