It is narrated about Sayyiduna Ibn Abbas (may Allah be pleased with them) that he reunited a husband and wife who had previously undergone two divorces and a khul‘.
Hadith Referenceسنن الدارقطني / كتاب النكاح / 3870
Hadith Takhrij«أخرجه سعيد بن منصور فى ((سننه)) برقم: 1453، والدارقطني فى ((سننه)) برقم: 3870»