(9) باب الطَّلاَقِ عَلَى الْهَزْلِ
Narrated AbuHurayrah:
The Prophet (ﷺ) said: There are three things which, whether undertaken seriously or in jest, are treated as serious: Marriage, divorce and taking back a wife (after a divorce which is not final)
Reference: Sunan Abi Dawud 2194
In-book reference: Book 13, Hadith 20
English translation: Book 12, Hadith 2189