عَنِ ابْنِ عَبَّاسٍ: أَنَّ امْرَأَةَ ثَابِتِ بْنِ قِيسٍ أَتَتِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَتْ: يَا رَسُولَ اللَّهِ ثَابِتُ بْنُ قَيْسٍ مَا أَعْتِبُ عَلَيْهِ فِي خُلُقٍ وَلَا دِينٍ وَلَكِنِّي أَكْرَهُ الْكُفْرَ فِي الْإِسْلَامِ فَقَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «أَتَرُدِّينَ عَلَيْهِ حَدِيقَتَهُ؟» قَالَتْ: نَعَمْ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «اقْبَلِ الْحَدِيقَةَ وَطَلِّقْهَا تَطْلِيقَةً» . رَوَاهُ البُخَارِيّ

Ibn ‘Abbas said

One makes atonement for something he has made unlawful for himself.* You have had a good example in God’s Messenger. * i.e. something not in itself unlawful. It is treated like an oath for breaking which atonement must be made. The Prophet’s example refers to his withdrawing from his wives for a period.(Bukhari and Muslim.)