Musnad Ahmad 1007:133

Waki’ narrated to us, Ali ibn al-Mubarak narrated to us, and Hashim narrated to us, Shayban narrated to us, all of them from Yahya ibn Abi Kathir, from Abdullah ibn Abi Qatadah, from his father, who said: The Messenger of Allah (peace and blessings of Allah be upon him) said: "When the prayer is called (iqamah), do not stand up until you see me, and upon you is tranquility."