لَيْسُواْ سَوَاء مِّنْ أَهْلِ الْكِتَابِ أُمَّةٌ قَآئِمَةٌ يَتْلُونَ آيَاتِ اللّهِ آنَاء اللَّيْلِ وَهُمْ يَسْجُدُونَ
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سورة آل عمران
(3/113) Yet they are not (all) alike; of the People of the Book there is a community who recite the Verses of Allah by standing during the hours of the night and prostrate themselves.
Surah Al Imran