Humaid reported:

I asked Thabit al-Bunani whether it was permissible for a man to talk after the qamah had been pronounced. He narrated a tradition on the authority of Anas: (once) the Iqamah was pronounced, and a person came to the apostle of Allah ﷺ and detained him after the Iqamah had been pronounced.

حَدَّثَنَا حُسَيْنُ بْنُ مُعَاذٍ، حَدَّثَنَا عَبْدُ الأَعْلَى، عَنْ حُمَيْدٍ، قَالَ سَأَلْتُ ثَابِتًا الْبُنَانِيَّ عَنِ الرَّجُلِ، يَتَكَلَّمُ بَعْدَ مَا تُقَامُ الصَّلاَةُ فَحَدَّثَنِي عَنْ أَنَسِ بْنِ مَالِكٍ، قَالَ أُقِيمَتِ الصَّلاَةُ فَعَرَضَ لِرَسُولِ اللَّهِ ﷺ رَجُلٌ فَحَبَسَهُ بَعْدَ مَا أُقِيمَتِ الصَّلاَةُ .