Mishkat al-Masabih 3199
Ibn ‘Abbas said:
Barira’s husband was a negro slave called Mughith whom I can still picture going round behind her in the streets of Medina weeping with the tears flowing on his beard. The Prophet said to al- ‘Abbas, “Are you not astonished, ‘Abbas, at Mughith’s love; of Barira and Barira’s hatred of Mughith?" The Prophet expressed a wish that she would take him back, but when she asked whether he was giving her a command and he replied that he was merely interceding, she said, “I have no need of him.” 

Bukhari transmitted it.
وَعَنِ ابْنِ عَبَّاسٍ قَالَ: كَانَ زَوْجُ بَرِيرَةَ عبدا أسود يُقَالُ لَهُ مُغِيثٌ كَأَنِّي أَنْظُرُ إِلَيْهِ يَطُوفُ خلفهَا فِي سِكَك الْمَدِينَة يبكي وَدُمُوعُهُ تَسِيلُ عَلَى لِحْيَتِهِ فَقَالَ النَّبِيُّ صَلَىَ اللَّهُ عَلَيْهِ وَسَلَّمَ لِلْعَبَّاسِ: «يَا عَبَّاسُ أَلَا تَعْجَبُ مِنْ حُبِّ مُغِيثٍ بَرِيرَةَ؟ وَمِنْ بُغْضٍ بَرِيرَة مغيثاً؟» فَقَالَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «لَوْ راجعته» فَقَالَتْ: يَا رَسُولَ اللَّهِ تَأْمُرُنِي؟ قَالَ: «إِنَّمَا أَشْفَعُ» قَالَتْ: لَا حَاجَةَ لِي فِيهِ. رَوَاهُ البُخَارِيّ