It was narrated from Ibn 'Umar that the Prophet said, concerning a man who had a wife and he divorced her, then she married another man who divorced her before consummating the marriage with her, and (it was asked) whether she could go back to her first husband:
"No, not until she tastes his sweetness."
Reference: Sunan an-Nasa'i 3414 In-book : Book 27, Hadith 26 English translation : Vol. 4, Book 27, Hadith 3443
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