Nafi' narrates from Sayyiduna Ibn Umar (may Allah be pleased with him) that he saw a man praying after the Friday prayer in his (same) place, so he pushed him away and said: "Would you pray the Friday prayer as four rak'ahs?" The narrator says: Sayyiduna Ibn Umar (may Allah be pleased with him) used to pray two rak'ahs in his house and would say that the Prophet (peace and blessings be upon him) used to do so.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5945