When the last ten days of Ramadan came, the Messenger of Allah ﷺ would wake up his family and tighten his izar. It was said to Abu Bakr: What does tightening the izar mean? He said: Keeping away from women. (Using translation from Aḥmad 1103)
كَانَ النَّبِيُّ ﷺ إِذَا دَخَلَ الْعَشْرُ أَيْقَظَ أَهْلَهُ وَرَفَعَ الْمِئْزَرَ قِيلَ لِأَبِي بَكْرٍ مَا رَفْعُ الْمِئْزَرِ؟ قَالَ اعْتَزَلَ النِّسَاءَ