They began to play, amuse and sing. He united the support of his hand round his knees that were drawn up, and said: I heard Abdullah (ibn Mas'ud) say: I heard the apostle of Allah ﷺ say: Singing produces hypocrisy in the heart.
عَنْ شَيْخٍ شَهِدَ أَبَا وَائِلٍ فِي وَلِيمَةٍ فَجَعَلُوا يَلْعَبُونَ يَتَلَعَّبُونَ يُغَنُّونَ فَحَلَّ أَبُو وَائِلٍ حَبْوَتَهُ وَقَالَ سَمِعْتُ عَبْدَ اللَّهِ يَقُولُ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ الْغِنَاءُ يُنْبِتُ النِّفَاقَ فِي الْقَلْبِ