وَمَا كَانَ صَلَاتُهُمۡ عِندَ ٱلۡبَيۡتِ إِلَّا مُكَآءٗ وَتَصۡدِيَةٗۚ فَذُوقُواْ ٱلۡعَذَابَ بِمَا كُنتُمۡ تَكۡفُرُونَ
Wa maa kaana Salaatuhum 'indal Baiti illa mukaaa anw-wa tasdiyah; fazooqul 'azaaba bimaa kuntum takfuroon
English Translation
And their prayer at the House was not except whistling and handclapping. So taste the punishment for what you disbelieved
— Saheeh International