"The Messenger of Allah swore Ila from his wives, and he made something unlawful and he made himself unlawful what was lawful, and he made atonement for his oath."  

آلَى رَسُولُ اللَّهِ ﷺ مِنْ نِسَائِهِ وَحَرَّمَ فَجَعَلَ الْحَرَامَ حَلاَلاً وَجَعَلَ فِي الْيَمِينِ كَفَّارَةً قَالَ وَفِي الْبَابِ عَنْ أَنَسٍ وَأَبِي مُوسَى