Muwatta Malik 1169
موطأ مالك#1169SahihThese are the words of a Successor — the generation after the Companions — not of the Prophet ﷺ.
وَحَدَّثَنِي عَنْ مَالِكٍ، عَنِ ابْنِ شِهَابٍ، أَنَّ سَعِيدَ بْنَ الْمُسَيَّبِ، وَأَبَا، بَكْرِ بْنَ عَبْدِ الرَّحْمَنِ كَانَا يَقُولاَنِ فِي الرَّجُلِ يُولِي مِنِ امْرَأَتِهِ إِنَّهَا إِذَا مَضَتِ الأَرْبَعَةُ الأَشْهُرِ فَهِيَ تَطْلِيقَةٌ وَلِزَوْجِهَا عَلَيْهَا الرَّجْعَةُ مَا كَانَتْ فِي الْعِدَّةِ .
Yahya related to me from Malik from Ibn Shihab that Said al-Musayyab and Abu Bakr ibn Abd ar-Rahman said about a man who made a vow to abstain from intercourse with his wife, "If four months pass it is a divorce. The husband can go back to his wife as long as she is in her idda
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: 29:20