(12) باب إِحْلاَلِ الْمُطَلَّقَةِ ثَلاَثًا وَالنِّكَاحِ الَّذِي يُحِلُّهَا بِهِ
It was narrated from 'Aishah that a man divorced his wife three times and she married another husband who divorced her, before having intercourse with her. The Messenger of Allah was asked:
"Is she permissible for the first (husband to remarry her)?" He said: "No, not until he tastes her sweetness as the first tasted her sweetness."
Reference: Sunan an-Nasa'i 3412
In-book reference: Book 27, Hadith 24
English translation: Vol. 4, Book 27, Hadith 3441