Sayyiduna Anas (may Allah be pleased with him) says that when the Prophet (peace and blessings be upon him) divorced Sayyidah Hafsah (may Allah be pleased with her), he (peace and blessings be upon him) was ordered to take her back, and he (peace and blessings be upon him) took her back.
(b) Sayyiduna Anas bin Malik (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) divorced Sayyidah Hafsah (may Allah be pleased with her), and he (peace and blessings be upon him) was ordered to take her back.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الرجعة / 15153