(21) بَابُ قَوْلِ اللَّهِ تَعَالَى: {لِلَّذِينَ يُؤْلُونَ مِنْ نِسَائِهِمْ تَرَبُّصُ أَرْبَعَةِ أَشْهُرٍ} إِلَى قَوْلِهِ: {سَمِيعٌ عَلِيمٌ} {فَإِنْ فَاءُوا} رَجَعُوا
Ibn `Umar added:
"When the period of four months has expired, the husband should be put in prison so that he should divorce his wife, but the divorce does not occur unless the husband himself declares it. This has been mentioned by `Uthman, `Ali, Abu Ad-Darda, `Aisha and twelve other companions of the Prophet (ﷺ) ."
Reference: Sahih al-Bukhari 5291
In-book reference: Book 68, Hadith 40
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 7, Book 63, Hadith 213