Humayd (may Allah have mercy on him) says: I asked Thabit al-Bunani (may Allah have mercy on him) about a person who talks after the iqamah has been called. He narrated from Anas bin Malik (may Allah be pleased with him) that the iqamah had been called when a man came before the Prophet (peace and blessings be upon him) and detained him after the iqamah.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5853