Sahih al-Bukhari, Hadith 2024 ⓘ
Narrated Aisha: With the start of the last ten days of Ramadan, the Prophet used to tighten his waist belt (i.e. work hard) and used to pray all the night, and used to keep his family awake for the prayers.
حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا سُفْيَانُ، عَنْ أَبِي يَعْفُورٍ، عَنْ أَبِي الضُّحَى، عَنْ مَسْرُوقٍ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ قَالَتْ كَانَ النَّبِيُّ صلى الله عليه وسلم إِذَا دَخَلَ الْعَشْرُ شَدَّ مِئْزَرَهُ، وَأَحْيَا لَيْلَهُ، وَأَيْقَظَ أَهْلَهُ.
also referenced under: Book 32, Hadith 11 (In-Book) & Volume 3, Book 32, Hadith 241 (USC-MSA)