Is it obligatory to wash the hands and mouth with water and earth now, after years of unintentionally touching and consuming pork, given that the traces of impurity, such as color, taste, and smell, have vanished, and does this affect the validity and acceptance of prayers?

There is no sin in unintentionally eating pork, based on the Almighty's saying: (And there is no blame upon you for that in which you have erred, but [only for] what your hearts intended). However, one must be cautious and diligent about food. The correct ruling for purifying the impurity of pork is that it is like other impurities, and washing it once until the impurity is removed is sufficient. It is not necessary to wash it seven times, as is the case with the impurity of a dog.