Assalamualikum sheikh, during wudu I wash my feet sitting down by getting a scoop of water filled in my hand then I pour it on my feet which makes 1/3 part of my foot flowing with some water and dripping. As for the remaining part where my foot is dry, I just spread by rubbing. Is this valid?

Ustadh AbdulAziz al-Haqqan

Washing means the water runs over the whole foot. Pouring water on part of the foot and pushing it with your hand over the rest is enough if the water actually flows over every part, but only spreading wetness over the dry part by rubbing is wiping, not washing, and it does not count.