Is making water reach every part of head and neck necessary during Ghusl or we can just pass water and make it completely reach the head and neck while washing the whole body? Are the ears included as well in this requirement?
Bismihi ta'ala
Yes, in ghusl, water must reach all parts of the body, but not that you have to scrub it in. Just by allowing water to flow over it would be enough, with some assistance with your hands to make sure its completely reached the parts.
Ears are also included, like everywhere else. But, of course not the inside of the ear, or the inside of the nose. Just outer parts of the body.
And Allah knows best.