وَعَنِ ابْنِ عَبَّاسٍ رَضِيَ اَللَّهُ عَنْهُمَا
قَالَ: «أَسْلَمَتْ اِمْرَأَةٌ، فَتَزَوَّجَتْ، فَجَاءَ زَوْجُهَا، فَقَالَ: يَا رَسُولَ اَللَّهِ! إِنِّي كُنْتُ أَسْلَمْتُ، وَعَلِمَتْ بِإِسْلَامِي، فَانْتَزَعَهَا رَسُولُ اَللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: مِنْ زَوْجِهَا اَلْآخَرِ، وَرَدَّهَا إِلَى زَوْجِهَا اَلْأَوَّلِ»
A woman had accepted Islam and then re-married, so her (previous) husband came and said, “O Messenger of Allah, I had accepted Islam and she knew that I had done so.” So the Messenger of Allah (sallallahu alayhi wa sallam) took her away from her second husband and returned her to her first one.
Bulugh al-Maram 1173, Book 8, Marriage, Hadith 51. 1 min read