Musannaf Ibn Abi Shayba 33:218

Waki’ narrated to us, from Isma’il, from Qays, who said: When ‘Umar arrived in Ash-Sham, the people met him while he was upon his camel. They said, "O Commander of the Faithful, if only you would ride a pack horse, so that the great men of the people and their notables might meet you." ‘Umar said, "Do I not see you here? The matter is only from here," and he pointed with his hand toward the heaven. "Clear the path of my camel."