question #3 Sahih Muslim 1038b, Book 12, Hadith 128 : What is the importance of verifying the authenticity of a hadith through reliable sources?

I went to his house in San’a’ and he offered me nuts grown in his house to eat. And his brother said: I heard Mu’awiya b. Abu Sufyan saying that he had heard the Messenger of Allah (ﷺ) as saying, and then he made a mention (of a hadith) like one mentioned above.