عَنْ أَبِي هُرَيْرَةَ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: «اسْتَوْصُوا بِالنِّسَاءِ خَيْرًا فَإِنَّهُنَّ خُلِقْنَ مِنْ ضِلَعٍ وَإِنَّ أَعْوَجَ شَيْءٍ فِي الضِّلَعِ أَعْلَاهُ فَإِنْ ذَهَبْتَ تُقِيمُهُ كَسْرَتَهُ وَإِنْ تَرَكْتَهُ لَمْ يَزَلْ أَعْوَجَ فَاسْتَوْصُوا بِالنِّسَاءِ»

Anas said that God’s Messenger swore he would stay away from his wives for a month. His foot being dislocated, he stayed in an upper room for twenty-nine nights and then came down; and when it was remarked to him that he has sworn to stay away for a month, he replied, “The month has twenty-nine days.”**This is most probably with reference to the month in question, as it cannot be considered a general statement.Bukhari transmitted it.