Hadith 12:31
Sahih (Al-Albani)
Narrated Ali ibn AbuTalib:
(The narrator Isma'il said: I think ash-Sha'bi attributed this tradition to the Prophet) The Prophet (ﷺ) said: Curse be upon the one who marries a divorced woman with the intention of making her lawful for her former husband and upon the one for whom she is made lawful.
حَدَّثَنَا أَحْمَدُ بْنُ يُونُسَ، حَدَّثَنَا زُهَيْرٌ، حَدَّثَنِي إِسْمَاعِيلُ، عَنْ عَامِرٍ، عَنِ الْحَارِثِ، عَنْ عَلِيٍّ، رضى الله عنه - قَالَ إِسْمَاعِيلُ وَأُرَاهُ قَدْ رَفَعَهُ إِلَى النَّبِيِّ صلى الله عليه وسلم - أَنَّ النَّبِيَّ صلى الله عليه وسلم قَالَ " لَعَنَ اللَّهُ الْمُحَلِّلَ وَالْمُحَلَّلَ لَهُ "
Original Reference: Sunan Abi Dawud 2076