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)
أَنَّ رَسُولَ اللَّهِ ﷺ قَالَ ثَلاَثٌ جِدُّهُنَّ جِدٌّ وَهَزْلُهُنَّ جِدٌّ النِّكَاحُ وَالطَّلاَقُ وَالرَّجْعَةُ
The Messenger of Allah said: "Three are serious when they are serious, and serious when they are in jest: Marriage, divorce, and return."
قَالَ رَسُولُ اللَّهِ ﷺ ثَلاَثٌ جِدُّهُنَّ جِدٌّ وَهَزْلُهُنَّ جِدٌّ النِّكَاحُ وَالطَّلاَقُ وَالرَّجْعَةُ
the Messenger of Allah ﷺ said: "There are three matters in which seriousness is serious and joking is serious: marriage, divorce and taking back (one's wife). "
قَالَ رَسُولُ اللَّهِ ﷺ ثَلاَثٌ جِدُّهُنَّ جِدٌّ وَهَزْلُهُنَّ جِدٌّ النِّكَاحُ وَالطَّلاَقُ وَالرَّجْعَةُ
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) (Using translation from Abū Dāʾūd 2194)
عَنْ رَسُولِ اللَّهِ ﷺ سَمِعَهُ يَقُولُ «ثَلَاثٌ جِدُّهُنَّ جِدٌّ وَهَزْلُهُنَّ جِدٌّ النِّكَاحُ وَالطَّلَاقُ وَالرَّجْعَةُ»
"ثلاثٌ جِدُّهُنَّ جِدٌّ، وَهَزلُهُنَّ جِدٌّ: النِّكاحُ، وَالطَّلاقُ، والرَّجْعَةُ".
"ثَلاثٌ جِدُّهُنَّ جِدٌّ، وَهَزْلُهُنَّ جدٌّ: الطَّلَاقُ، والنكاحُ، والعِتاقُ".