حَدَّثَنَا عُثْمَانُ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَفَّانُ، حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، عَنْ عِكْرِمَةَ، عَنِ ابْنِ عَبَّاسٍ، أَنَّ زَوْجَ، بَرِيرَةَ كَانَ عَبْدًا أَسْوَدَ يُسَمَّى مُغِيثًا فَخَيَّرَهَا - يَعْنِي النَّبِيَّ صلى الله عليه وسلم - وَأَمَرَهَا أَنْ تَعْتَدَّ ‏.‏

Ibn ‘Abbas said “The husband of Barirah was a black slave called Mughith. The Prophet (PBUH) gave her choice and commanded her to observe the waiting period.” Translation Not Available

Book Ref: Sunan Abi Dawud Book 13 Hadith 2232
Web Ref:  Sunan Abi Dawud Book 12 Hadith 2224