Musannaf Ibn Abi Shaybah 5807 — Those who permitted delivering

Raja' said: Marwan had the pulpit brought out, and he delivered the sermon before the prayer. A man stood up and said: "O Marwan! You have gone against the Sunnah. You had the pulpit brought out, whereas the pulpit was never brought out, and you delivered the sermon before the prayer." On this occasion Sayyiduna Abu Sa'id (may Allah be pleased with him) said: "Who is this?" The people told him: "This is so-and-so." He said: "He has fulfilled his duty."