Another question is about the way of wudhu. As I do not belong to a Muslim family, I am searching for the right way. As per sahih Muslim in the chapter of book of wudu hadith number 162 describes to wash feet thoroughly but I saw some video of YouTube in which the people of Shia community believe in wiping their feet. What are the evidence for supporting this case.

Actually reading one hadith and deducting a result is not the way of getting a Islamic law, rather one has to go through Quran and all hadith regarding that act and then a certified person announce the result if that act is compulsory or we have a choice or it is forbidden. On the contrary in other sects a single hadith is quoted and result deducted. The results are very clear