(37) باب إِذَا طَلَّقَهَا ثَلاَثًا ثُمَّ تَزَوَّجَتْ بَعْدَ الْعِدَّةِ زَوْجًا غَيْرَهُ فَلَمْ يَمَسَّهَا
Narrated `Aisha:
Rifa`a Al-Qurazi married a lady and then divorced her whereupon she married another man. She came to the Prophet (ﷺ) and said that her new husband did not approach her, and that he was completely impotent. The Prophet (ﷺ) said (to her), "No (you cannot remarry your first husband) till you taste the second husband and he tastes you (i.e. till he consummates his marriage with you).
Reference: Sahih al-Bukhari 5317
In-book reference: Book 68, Hadith 66
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 63, Hadith 238