Sahih al Bukhari
Divorce
Hadith #75
68.75
حَدَّثَنِي مُحَمَّدٌ، أَخْبَرَنَا عَبْدُ الْوَهَّابِ، حَدَّثَنَا يُونُسُ، عَنِ الْحَسَنِ، قَالَ زَوَّجَ مَعْقِلٌ أُخْتَهُ فَطَلَّقَهَا تَطْلِيقَةً.
Narrated Al-Hasan:Ma'qil gave his sister in marriage and later her husband divorced her once