Musannaf Ibn Abi Shaybah 5402 — Speaking when the imam has ascended

Tha'labah bin Abi Malik al-Qurazi said: I lived in the time of Sayyiduna Umar and Sayyiduna Uthman (may Allah be pleased with them both). When the imam came out on Friday we would stop praying, and when he spoke we would stop talking.