Hadithcore
Hadith #2113430

Muslim has:

"When a man makes his wife unlawful for himself, it is (treated like) an oath for which atonement must be made (if broken)."

وَلِمُسْلِمٍ : { إِذَا حَرَّمَ اَلرَّجُلُ عَلَيْهِ اِمْرَأَتَهُ , فَهِيَ يَمِينٌ يُكَفِّرُهَا } [1]‏ .‏

References2 variants
Sunnah.com reference
Book 8, Hadith 136
Arabic/English book reference
Book 8, Hadith 0