Yahya related to me from Malik from al-Fudayl ibn Abi Abdullah, the mawla of al-Mahri that al-Qasim ibn Muhammad and Salim ibn Abdullah said, "When a woman is divorced and begins her third period, she is clearly separated from him and is free to marry again."
أَنَّ الْقَاسِمَ بْنَ مُحَمَّدٍ وَسَالِمَ بْنَ عَبْدِ اللَّهِ كَانَا يَقُولاَنِ إِذَا طُلِّقَتِ الْمَرْأَةُ فَدَخَلَتْ فِي الدَّمِ مِنَ الْحَيْضَةِ الثَّالِثَةِ فَقَدْ بَانَتْ مِنْهُ وَحَلَّتْ
Yahya related to me from Malik that he had heard that Abu Bakr ibn Abd ar-Rahman and Sulayman ibn Yasar and Ibn Shihab used to say, "When the divorced woman enters the beginning of her third period, she is clearly separated from her husband and there is no inheritance between them and he has no access to her."
عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ وَسَالِمِ بْنِ عَبْدِ اللَّهِ وَأَبِي بَكْرِ بْنِ عَبْدِ الرَّحْمَنِ وَسُلَيْمَانَ بْنِ يَسَارٍ وَابْنِ شِهَابٍ أَنَّهُمْ كَانُوا يَقُولُونَ إِذَا دَخَلَتِ الْمُطَلَّقَةُ فِي الدَّمِ مِنَ الْحَيْضَةِ الثَّالِثَةِ فَقَدْ بَانَتْ مِنْ زَوْجِهَا وَلاَ مِيرَاثَ بَيْنَهُمَا وَلاَ رَجْعَةَ لَهُ عَلَيْهَا
[Machine] About a woman, if she is divorced and enters her third period of menstrual bleeding, they say, "She has shown signs of ending and has become permissible."
عَنِ الْمَرْأَةِ إِذَا طُلِّقَتْ فَدَخَلَتْ فِي الدَّمِ مِنَ الْحَيْضَةِ الثَّالِثَةِ فَقَالَا قَدْ بَانَتْ مِنْهُ وَحَلَّتْ