(5) باب الْعَمَلِ فِي الْعَشْرِ الأَوَاخِرِ مِنْ رَمَضَانَ
Narrated Aisha:
With the start of the last ten days of Ramadan, the Prophet (ﷺ) 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.
Reference: Sahih al-Bukhari 2024
In-book reference: Book 32, Hadith 11
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 3, Book 32, Hadith 241