Musannaf Ibn Abi Shayba 1:766

766. 'Abd al-A'la ibn 'Abd al-A'la narrated to us, from al-Mustamir ibn al-Rayyan, from Abu al-Jawza', who said: If a man performs ghusl in the place of washing and it is clean, he does not wash his feet. And if it is not clean, he washes his feet.