عَنْ مَسْرُوقٍ عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا تَذْكُرُ عَنِ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ كَانَ إِذَا دَخَلَ الْعَشْرُ أَحْيَا اللَّيْلَ، وَأَيْقَظَ أَهْلَهُ وَشَدَّ الْمِئْزَرَ
Lady Aisha (may Allah be pleased with her) narrates that when the last ten days of Ramadan began, he (the Prophet) would stay awake at night himself and also keep his family awake, and he would tighten his waistcloth.