question #2 Sahih Muslim 200d, Book 1, Hadith 403 : How does the chain of narration contribute to the credibility of a hadith?

Mu’tamir narrated to us on the authority of his father who transmitted it liom Anas that verity the Messenger of Allah (ﷺ) said, and then narrated the hadith like the one transmitted by Qatada on the authority of Anas.