وَعَنِ ابْنِ عَبَّاسٍ قَالَ: فِي الْحَرَامِ يُكَفَّرُ لَقَدْ كَانَ لَكُمْ فِي رَسُولِ الله أُسْوَة حَسَنَة
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.)
Source: Mishkat al-Masabih — repository translation · Al-Khatib Al-Tabrizi — authenticity/grade metadata requires independent source review · Sunnah.comAudio not available for the selected reciter.
Source: Mishkat al-Masabih — repository arabic · Al-Khatib Al-Tabrizi · Sunnah.com