Musnad Ahmad 938:72

'Abd al-Razzaq narrated to us, he said: I read in the book of Ma'mar, from al-Zuhri, from 'Abd al-Malik ibn Abi Bakr, from Kharijah, from Zayd ibn Thabit, from the Prophet, peace and blessings of Allah be upon him: "In wudu (ablution) is that which fire has touched."