Musnad Abu Ya'la al-Mawsili 160:80

Ibrahim ibn Dinar narrated to us, Abu Qatan narrated to us, from Shu'bah, from Qatadah, from Khallas, from Abu Rafi', from Abu Hurayrah, from the Prophet, peace and blessings of Allah be upon him, who said: "If the people knew what is in the first row, there would be a drawing of lots [to attain it]."