It was narrated from Commander of the Faithful عليه السلام and Ibn Abbas (may Allah سبحانه وتعالى be pleased with him) from the Prophet (peace and blessings be upon him and his family) that: "Prophet صلى الله عليه وعلى آله وسلم performed ablution and wiped over his feet and his sandals."
Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 66