Musnad Abu Ya'la al-Mawsili 159:127

Mujahid ibn Musa narrated to us, al-Qa'nabi narrated to us, Sulayman ibn Bilal narrated to us, from Musa ibn Abi Tamim, from Sa'id ibn Yasar, from Abu Hurayrah, that the Messenger of Allah (may Allah bless him and grant him peace) said: "A dinar for a dinar, there is no superiority between them."