There is nothing in the Hadith to indicate that it is recommended to do Wudu for every Sunnah prayer. The Hadith of Bilal indicates that it is recommended to persist in doing Wudu, and that it is recommended to offer a prayer immediately after doing Wudu.

The mere feeling that something has come out of the back passage does not break your Wudu. You do not have to repeat the prayers that you have offered because you were in a state of Wudu and you were not sure that there was anything that would invalidate it.

Allah exempted the sick from having to do Wudu with water and has allowed them to do Tayammum. If Wudu will harm your skin or delay your recovery, then you should do Tayammum, and there is no sin on you.

There is nothing wrong with praying while wearing fake nails, but they should be removed when doing Wudu and Ghusl, so that the water may reach what is beneath them.

If part of the limb that must be washed during wudu remains of the amputated limb, then it must be washed, and in this case it is not acceptable to wipe over the artificial limb, even if it covers the entire arm.

If the beard is light and the skin of the face beneath it can be seen, then it is obligatory to run one’s fingers through it and wash what is beneath it. However, if the beard is thick and the skin of the face beneath it cannot be seen, then it is not obligatory to wash what is beneath it, but it is recommended to run the fingers through it according to the majority of scholars.