Abu Ya'la recorded this from him (that is, from Sayyiduna Anas (may Allah be pleased with him)): When the Prophet (peace and blessings be upon him) divorced Sayyidah Hafsah (may Allah be pleased with her), he was commanded to take her back. The narrators of Abu Ya'la are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب الطلاق / 7751