Assalamualaikum ustadh, if i had to do ghusl and i did it for about 10 mins, after finish i went and prayed but i realised i didnt wash my ear, does water reach there without using my fingers or should i redo my ghusl?

Ustadh AbdulAziz al-Haqqan

This is waswas as wayer has reavhed everywhere if you are using a shower in a couple of minutes. As for rubbing it is not required.