وَحَدَّثَنِي عَنْ مَالِكٍ، أَنَّهُ بَلَغَهُ أَنَّ الْقَاسِمَ بْنَ مُحَمَّدٍ، سُئِلَ عَنْ رَجُلٍ، طَلَّقَ امْرَأَتَهُ الْبَتَّةَ ثُمَّ تَزَوَّجَهَا بَعْدَهُ رَجُلٌ آخَرُ فَمَاتَ عَنْهَا قَبْلَ أَنْ يَمَسَّهَا هَلْ يَحِلُّ لِزَوْجِهَا الأَوَّلِ أَنْ يُرَاجِعَهَا فَقَالَ الْقَاسِمُ بْنُ مُحَمَّدٍ لاَ يَحِلُّ لِزَوْجِهَا الأَوَّلِ أَنْ يُرَاجِعَهَا ‏.‏ قَالَ مَالِكٌ فِي الْمُحَلِّلِ إِنَّهُ لاَ يُقِيمُ عَلَى نِكَاحِهِ ذَلِكَ حَتَّى يَسْتَقْبِلَ نِكَاحًا جَدِيدًا فَإِنْ أَصَابَهَا فِي ذَلِكَ فَلَهَا مَهْرُهَا ‏.‏

Yahya related to me from Malik that he had heard that when askedwhether it was permissible for a man to return to his wife if he haddivorced her irrevocably and then another man had married her afterhim and died before consummating the marriage, al-Qasim ibn Muhammadsaid, "It is not halal for the first husband to return to her." Malik said, about the muhallil, that he could not remain in themarriage until he undertook a new marriage. If he had intercourse withher in that marriage, she had her dowry. Translation Not Available

Book Ref: Muwatta Imam Malik Book 28 Hadith 1113
Web Ref:  Muwatta Imam Malik Book 28 Hadith 19