Musannaf Ibn Abi Shayba 3:1639

Waki’ narrated to us, [saying] Kathir bin Zayd narrated to us, from al-Muttalib bin Abdullah bin Hantab, that Umar bin al-Khattab came to the Mosque of Quba on a horse of his. He prayed in it, then said, "O Yarfa’, bring me a palm branch." He said: So he brought him a palm branch. Then Umar tucked his garment [around his waist] and swept it.