Musnad Ahmad 1239:3

Sufyan said: And Ibn Jurayj informed us about him, saying: Kathir narrated to us, from his father. So I asked him, and he said: "I did not hear it from my father, but from some of my family, from my grandfather, that the Prophet, peace and blessings of Allah be upon him, prayed near the gate of Banu Sahm, with no barrier between him and the Tawaf."