Musannaf Ibn Abi Shaybah 6300 — Those who permitted that

Humayd says: Sayyiduna Anas (may Allah be pleased with him) used to pray the Friday prayer with the imam in the house of Nafi' bin Abd al-Harith. That house was slightly elevated above the mosque, and one of its doors opened into the mosque. He would pray the Friday prayer in that house, following the imam.