Al-Qasim (may Allah have mercy on him) narrates from Sayyidah Aishah (may Allah be pleased with her) that a man gave (his wife) three divorces; then the woman married, and the second husband divorced her. The Prophet (peace and blessings be upon him) was asked: Is she lawful for the first husband? He (peace and blessings be upon him) said: "No, not until she tastes his sweetness as the first one tasted it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الخلع والطلاق / 14953