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