Musnad Abu Ya'la al-Mawsili 50:3

Abu Bakr ibn Abi Shaybah narrated to us, Abd al-Rahim ibn Sulayman narrated to us, from Mujalid, from Qays ibn Abi Hazim, from al-Sanabihi al-Ahmasi: That the Messenger of Allah (may Allah bless him and grant him peace) saw a fine she-camel among the camels of the charity (Sadaqah). He said, "May Allah fight the owner of this she-camel." He (the man) said, "O Messenger of Allah, I exchanged it for two inferior camels." He said, "Then that is fine."