[Machine] The Prophet ﷺ used to alternate between sleeping and praying in the first twenty nights. But when the last ten nights commenced, he would devote himself strictly to worship and tighten his waist wrap.
كَانَ يَخْلِطُ فِي الْعِشْرِينَ الْأُولَى النَّبِيُّ ﷺ مِنْ نَوْمٍ وَصَلَاةٍ فَإِذَا دَخَلَتِ الْعَشْرُ جَدَّ وشَدَّ الْمِئْزَرَ