Hadith 1501
ما من عبد يدخل الجنة الا جلس عند رأسه وعند رجليه ثنتان من الحور العين يغنيانه بأحسن صوت سمعته الجن والانس
"Whoever enters Paradise, two houris with beautiful eyes will sit by his head and two by his feet, and they will sing to him in the best of voices, which will be heard by both jinn and humans."