أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، عَنْ سُفْيَانَ، عَنْ أَبِي إِسْحَاقَ، عَنْ أَبِي الأَحْوَصِ، عَنْ عَبْدِ اللَّهِ، قَالَ طَلاَقُ السُّنَّةِ أَنْ يُطَلِّقَهَا طَاهِرًا فِي غَيْرِ جِمَاعٍ .
It was narrated that 'Abdullah said: "The Sunnah divorce is to divorce her when she is pure (not menstruating) without having had intercourse with her." Translation Not Available
Book Ref: Sunan An Nisai Book 27 Hadith 3395
Web Ref: Sunan An Nisai Vol 4 Book 27 Hadith 3424