When the last ten nights of Ramadan began, the Messenger of Allah ﷺ would spend the night in worship, wake his family, and tighten his waist-wrap.
أخبرنا محمد بن عبد الله بن يزيد قال حدثنا سفيان عن أبي يعفور عن مسلم عن مسروق قال
كان إذا دخلت العشر أحيا رسول الله ﷺ الليل وأيقظ أهله وشد المئزر
Bukhari narrated it in "The Merit of Laylat al-Qadr," chapter "Striving in the Last Ten Days of Ramadan," Hadith 2024, and Muslim narrated it in "Itikaf," chapter "Striving in the Last Ten Days of Ramadan," Hadith 1174, from the hadith of Sufyan bin Uyayna, with the same chain.