Mishkat al-Masabih 28 Events of the Day of Resurrection and the Beginning of Creation كتاب أحوال القيامة وبدء الخلق 125

وَعَنْ جَابِرٍ قَالَ: سَأَلَ رَجُلٌ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: أَيَنَامُ أَهْلُ الْجَنَّةِ؟ قَالَ: «النَّوْمُ أَخُو الْمَوْتِ وَلَا يَمُوتُ أَهْلُ الجنةِ» . رواهُ البيهقيُّ فِي «شعب الْإِيمَان»

Jabir told that when a man asked God’s messenger whether the inhabitants of paradise would sleep, he replied, “Sleep is the brother of death, and the inhabitants of paradise do not die.” Baihaqi transmitted it in Shu’ab al-iman .