Yahya bin Yazid al-Huna'i says that Sayyiduna Anas bin Malik (may Allah be pleased with him) was asked about a man who had married a woman whose husband had given her three divorces, but the second had not yet consummated the marriage with her. He said: The Messenger of Allah (peace and blessings be upon him) was asked, and he (peace and blessings be upon him) said: "She is not lawful for him until that man tastes her sweetness and the woman tastes his sweetness."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرجعة / 15201