This fatwa explains that dipping the feet into water can count as washing them, but only with the correct intention. If a person dips his feet into a pond, tank, or bucket while making wudu, his wudu will be valid only if he intended to wash his feet as part of wudu.

If the person did not have the intention of washing the feet for wudu, then the wudu will not be valid. This Islamic ruling is mentioned by Islamic scholars in Al Majmu.

This shows that intention is necessary for the validity of wudu according to this fatwa.