Sunan Abi Dawud
Sunan Abi Dawud 2252
Regarding Li'an (Mutual Cursing)
Arabic hadith text
حَدَّثَنَا سُلَيْمَانُ بْنُ دَاوُدَ الْعَتَكِيُّ، حَدَّثَنَا فُلَيْحٌ، عَنِ الزُّهْرِيِّ، عَنْ سَهْلِ بْنِ سَعْدٍ، فِي هَذَا الْحَدِيثِ وَكَانَتْ حَامِلاً فَأَنْكَرَ حَمْلَهَا فَكَانَ ابْنُهَا يُدْعَى إِلَيْهَا ثُمَّ جَرَتِ السُّنَّةُ فِي الْمِيرَاثِ أَنْ يَرِثَهَا وَتَرِثَ مِنْهُ مَا فَرَضَ اللَّهُ عَزَّ وَجَلَّ لَهَا
Translation
Regarding this hadith: She was pregnant, and he denied her pregnancy, so her son was attributed to her. Then the Sunnah was established regarding inheritance that he inherits from her and she inherits from him what Allah, the Mighty and Majestic, has ordained for her.