It was narrated from 'Amr bin Shu'aib, from his father, from his grandfather, that the Prophet ﷺ forbade reciting poetry in the Masjid.

أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ بْنُ سَعْدٍ، عَنِ ابْنِ عَجْلاَنَ، عَنْ عَمْرِو بْنِ شُعَيْبٍ، عَنْ أَبِيهِ، عَنْ جَدِّهِ، أَنَّ النَّبِيَّ ﷺ نَهَى عَنْ تَنَاشُدِ الأَشْعَارِ فِي الْمَسْجِدِ .