Al-Mukhtasar
وَمَا كَانَ صَلَاتُهُمْ عِندَ ٱلْبَيْتِ إِلَّا مُكَآءً وَتَصْدِيَةً ۚ فَذُوقُوا۟ ٱلْعَذَابَ بِمَا كُنتُمْ تَكْفُرُونَ ﴿٣٥﴾
The prayer of the idolaters at the Sacred Mosque was nothing but whistling and clapping. So taste, O idolaters, the punishment of being killed or taken prisoner on the day of Badr because of your disbelief in Allah and rejection of His Messenger.