Sayyiduna Anas bin Malik (may Allah be pleased with him) said that there was some disagreement between Abu Talhah and Umm Sulaym (may Allah be pleased with them both), so Abu Talhah intended to divorce Umm Sulaym (may Allah be pleased with her). He (peace and blessings be upon him) said: "Divorcing Umm Sulaym would be disobedience and a sin."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الخلع والطلاق / 14901