3:113 They are not all the same, from the people of the book are an upright nation; they recite God's signs during parts of the night and they prostrate.
Edip-Layth (Quran: A Reformist Translation)
Dictionaries
Ejtaal Arabic Almanac: Lane's Lexicon, Hans Wehr, Lisan al-Arab and others
and their prayers before the Temple are nothing but whistling and clapping of hands.* Taste then, [O unbelievers,] this chastisement as an outcome of your persistent denial of the truth!*