Hadith on Worship: The Prophet would perform extra acts of worship during the last ten nights of Ramadan

Aisha reported: During the last ten nights of Ramadan, the Prophet, peace be upon him, would tighten his belt and spend the night in worship, and he would wake up his family.

[Sahih Bukhari, Book 32, Number 241]

عَنْ عَائِشَةَ رَضِيَ اللَّهُ عَنْهَا قَالَتْ كَانَ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِذَا دَخَلَ الْعَشْرُ شَدَّ مِئْزَرَهُ وَأَحْيَا لَيْلَهُ وَأَيْقَظَ أَهْلَهُ

صحيح البخاري  كِتَاب فَضْلِ لَيْلَةِ الْقَدْرِ  بَاب الْعَمَلِ فِي الْعَشْرِ الْأَوَاخِرِ مِنْ رَمَضَانَ