The husband of Barirah was a slave named Mughith. It is as though I can still see him following behind her, weeping, with tears flowing down into his beard. The Prophet ﷺ said to Abbas, "Abbas, are you not amazed at how much Mughith loves Barirah, and how much Barirah hates Mughith?"The Prophet ﷺ then said to her, "If only you would take him back, for he is the father of your child."She asked, "Messenger of Allah, are you commanding me to do so?"He replied, "I am only interceding."She said, "Then I have no need for him."
أخبرنا محمد بن بشار قال حدثنا عبد الوهاب قال حدثنا خالد عن عكرمة
أن زوج بريرة كان عبدا يقال له مغيث كأني أنظر إليه يطوف خلفها يبكي ودموعه تسيل على لحيته فقال النبي ﷺ للعباس يا عباس ألا تعجب من حب مغيث بريرة ومن بغض بريرة مغيثا فقال لها النبي ﷺ لو راجعتيه فإنه أبو ولدك قالت يا رسول الله أتأمرني قال إنما أنا شفيع قالت فلا حاجة لي فيه
Bukhari reported it in the Book of Divorce, chapter on the Prophet's intercession regarding Barirah's husband, hadith no. 5283, from Muhammad bin Bashshar with this wording. It is also found in Al-Kubra, hadith no. 5978, where he said, this is a valid hadith.